If you have just searched why is there blood in my sperm at two in the morning, having seen it for the first time, start here. This is the same answer I give in my consulting room, in the same order.
Blood in your semen is called hematospermia. In the great majority of men it turns out to be benign and it clears completely — but that reassurance is only worth giving after you have been properly tested, not instead of testing you.
The commonest identified cause is a recent medical procedure. The commonest cause that is not a procedure is inflammation of the seminal vesicles or prostate (Drury, 2022; Gönültaş, 2025).
In my clinic every man with blood in his semen gets the same short work-up before I say a word about it being harmless: blood count, urine routine, urine culture, STI tests where there has been exposure, PSA, and a transrectal ultrasound. Once prostate cancer, seminal vesiculitis and prostatitis are excluded, I can tell you honestly that this settles — usually over eight months to a year.
Two things I ask of you in the meantime: stop masturbating until the bleeding stops, and do not actively try for a baby while there is still blood in the semen. The reason for the second one is further down, and it matters.
Let me tell you what actually happens in my consulting room.
A man walks in holding his phone. On it is a photograph he took in the bathroom, and he has not slept properly since he took it. He has already searched the words “blood in sperm cancer” and he has already decided what it is.
I am a practising andrologist and sexologist in Chennai, and I have had this exact conversation several hundred times. So let me give you the sentence I give him, before anything else.
In a 2025 multicentre study of men presenting with this exact complaint — 199 men across 22 centres in 42 cities — the conclusion was that hematospermia in all age groups is generally caused by self-limiting, benign conditions (Gönültaş, 2025).
That is not me being kind to you. That is the finding.
Now let me give you what the hospital pages will not. They will tell you it is usually harmless and then send you for a scan anyway. I am going to tell you which tests are worth having, which ones are almost pure theatre, and the exact point at which I stop reassuring and start investigating.
I recorded a short video on this some time ago, and it still covers the essentials in about the time it takes to make tea.
The written version below goes considerably further — particularly on which investigations are worth your money, and on the two causes that matter in India and get left out of every international page.
Eleven things you were never told about blood in semen
- The right tests matter; the wrong ones are theatre. In 300 consecutive men referred for hematospermia, 469 investigations — flexible cystoscopies, kidney scans, urograms — turned up significant new disease needing surgery in two men. 0.4% (Ng, 2013). Camera down the urethra: almost never the answer.
- The simple tests are the ones that find cancer. In that same 300, 13 prostate cancers were found (5.7%) — every single one in a man over 40 who had either a raised PSA or an abnormal rectal examination (Ng, 2013). A blood test and a two-minute examination outperformed every scope and scanner. That is an argument for PSA and an examination in everyone, not for skipping the work-up.
- The commonest cause is a doctor. Iatrogenic causes — above all transrectal prostate biopsy — are the single most common source of blood in semen (Drury, 2022).
- The commonest non-procedural cause is inflammation, not infection. In the 2025 multicentre series it accounted for 38.1% of cases, while urine or semen cultures were positive in only 12.9% (Gönültaş, 2025). Most men are handed antibiotics they do not need.
- Cancer and trauma together account for a small minority. Across the older literature, malignancy and trauma combined make up roughly 4–13% of cases, while infection and inflammation account for 39–55% (Klevecka, 2005).
- In up to 70% of men, nothing is ever found. And that is a normal, acceptable ending — not a failed workup (Klevecka, 2005).
- When somebody actually looks inside, they find inflammation. In 281 consecutive men with persistent hematospermia examined endoscopically, the bleeding was coming from the seminal vesicle in 91.5%, and 78.3% had seminal vesiculitis (Wang, 2020). This is why I will not sign a man off without excluding it.
- It clears — but in months, not days. In that same series, hematospermia had gone or greatly improved in 89.7% of men by twelve months (Wang, 2020). That matches what I tell my own patients: expect eight months to a year, not a week.
- While there is blood in it, your semen is not fertile ground. Red cells lyse and the free haemoglobin they release damages sperm motility and membrane integrity — and it is the red cells specifically, not the plasma, that do it (Rijsselaere, 2004). This is why I ask couples to pause.
- Your blood pressure matters more than you think. Hematospermia is a documented presenting sign of severe and malignant hypertension — and a BP cuff costs nothing (Bhaduri, 1999; Ambakederemo, 2015).
- The anxiety is a real symptom, not an overreaction. The literature explicitly records libido-affecting anxiety, partner reactions and knock-on erectile difficulty as consequences of hematospermia (Drury, 2022; Suh, 2017).
Those are the numbers. Here is the clinical shape of the problem.
Blood in semen in 60 seconds
It is called hematospermia
Blood in the ejaculate. It can look red, pink, brown or rust-coloured, sometimes with small clots.
It is usually benign
Generally self-limiting across all age groups, resolving without treatment (Gönültaş, 2025; Partin, 2025).
Testing comes before reassurance
Blood count, urine routine and culture, PSA and a transrectal ultrasound — in every man, whatever his age.
Most of it is inflammation
Seminal vesiculitis was found in 78.3% of men with persistent bleeding (Wang, 2020). It must be excluded, not assumed.
Age 40 changes the stakes
Over 40, prostate cancer has to be actively ruled out with PSA and imaging (Leocádio, 2009; Ng, 2013).
Pause trying for a baby
Red cells lyse and the haemoglobin harms sperm motility (Rijsselaere, 2004). Wait until the semen runs clear.
What hematospermia actually is
Hematospermia — also spelled haematospermia, and sometimes called hemospermia — simply means blood in the ejaculate (Suh, 2017). That is the whole definition. It is a symptom, not a disease, in exactly the way a nosebleed is a symptom.
What men actually describe to me varies more than the textbooks suggest:
- Bright red streaks or a pink tinge — fresh bleeding, usually from lower down the tract.
- Brown, rust or coffee-coloured semen — older blood that has been sitting in the seminal vesicles and is now clearing out. Men find this more frightening and it is usually less urgent.
- Small dark clots mixed through otherwise normal semen.
- A single dramatic episode followed by nothing at all — by far the commonest pattern.
One point that spares a lot of panic: the colour tells you roughly how old the blood is, not how serious it is. Brown does not mean worse. If anything, brown usually means the bleeding has already stopped. If your concern is really about semen colour in general rather than blood specifically, I have written separately about why semen turns green and what yellow semen means.
It matters that this is genuinely uncommon, because that is part of why it frightens people so much — almost nobody has heard of it before it happens to them. It is classically described in men under 40 and it typically arrives with no other symptom at all (Suh, 2017). In one series, 86.4% of men had no pain whatsoever (Khudhur, 2023).
Where the blood is actually coming from
This is the part that reassures men fastest, so let me spend a moment on it.
Semen is not made in one place. It is assembled, at the moment of ejaculation, from several organs feeding into one narrow channel. Most of the fluid volume comes from the seminal vesicles. Your prostate contributes most of the rest. And the sperm themselves — the part everybody thinks about — make up a tiny fraction of what you actually see.
So blood can enter that fluid from the seminal vesicles, the prostate, the ejaculatory ducts, the urethra, the epididymis or the vas deferens — and the classification systems used by urologists divide the causes exactly that way, by anatomical origin (Suh, 2017).
Here is why that matters to you. Those structures are small, richly supplied with fragile blood vessels, and they contract hard during ejaculation. A tiny vessel giving way there produces a startling amount of visible colour in a small volume of fluid. A few drops of blood are enough to turn an entire ejaculate red.
The comparison I use with patients is a nosebleed. Nobody rushes to a cancer clinic after a nosebleed, even though the blood is unmistakable and there is quite a lot of it, because everyone understands that a small vessel in a thin membrane has simply given way. Your prostate and seminal vesicles are the same kind of tissue. What differs is that you cannot see them, so your imagination fills in the rest.
Quantity is therefore an extremely poor guide to how much you are bleeding. This is the single most common misreading I correct. Men grade their own severity by how red it looked, and that number means almost nothing.
It also answers one of the most-asked questions: why is there blood in my semen but not in my urine? Because the bleeding is happening in the reproductive plumbing, which only empties during ejaculation — not in the urinary tract, which empties every time you pass urine. Blood in both is a different and more significant finding, and it belongs in the red-flag list below.
Why is there blood in my sperm? Every cause, ranked
Urologists group the causes into ten categories: inflammatory, infectious, lithiasis (stones), cystic, obstructive, tumoral, vascular, traumatic, iatrogenic and systemic (Suh, 2017). That taxonomy is genuinely useful, because it tells you at a glance how few of those boxes are frightening ones. Below is the same list translated into what it actually means for you.
| Category | What it looks like in practice | How common |
|---|---|---|
| Vascular — a ruptured small vessel | A fragile vein or capillary in the prostate or seminal vesicles gives way during ejaculation, exactly the way a vessel gives way in a nosebleed | The classic explanation for a one-off painless episode; part of the vascular group (Suh, 2017) |
| Iatrogenic (medical procedures) | Prostate biopsy, vasectomy, cystoscopy, prostate radiotherapy or fiducial-marker placement, prostatic artery embolisation | The single most common identified cause (Drury, 2022) |
| Inflammatory | Prostatitis, seminal vesiculitis, urethritis — often with no organism ever grown | 38.1% — the leading non-procedural cause (Gönültaş, 2025) |
| Infectious | Urinary infection, and sexually transmitted infections including chlamydia and gonorrhoea | Cultures positive in only 12.9% (Gönültaş, 2025) |
| Lithiasis & cystic | Stones or cysts in the seminal vesicles or ejaculatory ducts | A recognised cause of persistent bleeding (Hosseinzadeh, 2017) |
| Obstructive | Narrowing or blockage at the verumontanum or ejaculatory duct | Mostly in refractory cases (Hosseinzadeh, 2017) |
| Vascular & systemic | Severe hypertension, bleeding disorders, blood thinners, liver disease | Uncommon but genuinely reported (Bhaduri, 1999; Klevecka, 2005) |
| Traumatic | Injury to the perineum, testicles or pelvis; occasionally very vigorous or prolonged sexual activity | Part of the 4–13% with malignancy (Klevecka, 2005) |
| Tumoral | Prostate cancer, and much more rarely testicular or other genitourinary cancers | 5.8% in the over-40 / recurrent group (Gönültaş, 2025) |
| Idiopathic | Nothing found, ever, despite a full and proper workup | Up to 70% — and a legitimate answer (Klevecka, 2005) |
Two things in that table deserve to be pulled out, because they are where the internet consistently misleads men.
After a prostate biopsy, blood in my sperm is expected
First, the procedures. If you have had a transrectal prostate biopsy, expect this. Blood in semen after biopsy is common, mild and self-limiting (Loeb, 2013), and roughly one man in five reports some complication after the procedure (Bokhorst, 2016). In one series, haematospermia lasting more than two days occurred in 9% of men having core biopsies, and none of them required any treatment for it (Aus, 1994). It can persist for several weeks. That is expected, not a complication of concern. The same applies after vasectomy and after fiducial-marker placement before radiotherapy, where bleeding symptoms affected 9–13% of patients and were almost all mild (Gill, 2012).
Infection is diagnosed far less often than it is treated
Second, the infections. This is where I part company with a lot of clinics. Inflammation is roughly three times more common than proven infection in these men (Gönültaş, 2025). Yet nearly every man who walks into my room with this has already been given a course of antibiotics by someone. If you have genuine urinary symptoms, an STI exposure history, or a positive culture, antibiotics are correct and important. Otherwise you are treating a culture that was never taken.
The one number that should calm you down
If you remember nothing else from this page, remember this study.
Three hundred consecutive men were referred from their GPs to a specialist urology centre because they had blood in their semen. Between them they underwent 469 separate investigations: 206 flexible cystoscopies, 232 kidney ultrasounds, 16 urograms and 15 scrotal ultrasounds.
Out of all 469 of those investigations, the number that found significant new disease requiring surgery was two. That is 0.4% (Ng, 2013).
Now the other half of the same study, because I am not in the business of only telling you the comfortable part. Thirteen prostate cancers were detected in that group — 5.7% — along with two cases of dysplasia. Every one of them occurred in a man over 40 who had either a PSA above 3.0 or an abnormal digital rectal examination (Ng, 2013).
The camera down the urethra and the kidney scan found almost nothing. A blood test and a two-minute examination found everything that mattered.
Read that correctly. This is an argument about which tests, not about whether to test. Skip the flexible cystoscopy and the urogram, by all means. But nothing in it says skip the PSA, the rectal examination, the urine test or the ultrasound — those are precisely the ones that earned their place.
That is exactly how I practise. Nobody leaves my room with a cystoscopy request. Nobody leaves without a PSA, a urine culture and an ultrasound either.
That is a far more useful piece of information than “usually harmless, see your doctor”, which is where most pages leave you.
And there is a second reason I test everyone rather than watching and waiting. When somebody actually looks inside these men, they find something treatable far more often than the reassurance literature implies. In 281 consecutive men with persistent hematospermia who underwent endoscopy of the seminal tract, the bleeding point was in the seminal vesicle in 91.5%, and seminal vesiculitis was present in 78.3% — with stones in the seminal vesicle, ejaculatory duct or prostatic utricle in a large further share (Wang, 2020). Inflammation of that kind responds to treatment. You cannot treat what you never looked for.
Under 40 and over 40: the line that actually matters
Age is the strongest single factor in how seriously this needs to be taken, and the reason is straightforward: prostate cancer is uncommon before 40 and becomes progressively less uncommon after it. In men of 40 and under, hematospermia is most often inflammatory or infectious. Over 40, an association with more serious underlying disease genuinely does exist (Leocádio, 2009).
Here is how that translates into what should actually happen at your appointment.
| Under 40, single painless episode | Over 40, or recurrent, or symptomatic | |
|---|---|---|
| What it usually is | Inflammatory or infectious — or nothing identifiable at all | Same list, plus a real need to exclude prostate disease |
| Examination | Genital and rectal examination, blood pressure | Genital and rectal examination, blood pressure — the rectal examination is not optional |
| Blood tests | CBC; PSA | CBC; PSA — and taken seriously if raised |
| Urine / semen tests | Urine routine, culture and sensitivity; STI screen if exposure history | Urine routine, culture and sensitivity; STI screen |
| Imaging | TRUS — to exclude seminal vesiculitis, stones and cysts | TRUS, and MRI if TRUS is negative or inconclusive (Hosseinzadeh, 2017) |
| Cystoscopy | No — very poor yield (Ng, 2013) | No, unless something specific points to the bladder or urethra |
| Main worry to exclude | Seminal vesiculitis and prostatitis | Seminal vesiculitis, prostatitis and prostate cancer |
Where I go further than the guidelines
You will notice that the two columns look more alike than most pages suggest. That is deliberate, and it is where I part company with the international guidelines, so let me be straight about it rather than pretend there is no disagreement.
The American College of Radiology takes the view that imaging has no role in a young man with a single transient episode (Hosseinzadeh, 2017). I image everyone anyway. My reasons are practical and specific to the men I actually see: seminal vesiculitis is common and treatable and you will not find it without looking (Wang, 2020); tuberculosis is a live differential here in a way it simply is not in Boston or Brisbane; a great many of my patients present late and will not return for a follow-up appointment, so the “watch and review in six weeks” plan quietly becomes no plan at all; and a normal scan is itself powerful treatment for a man who has convinced himself he has cancer.
A transrectal ultrasound is cheap, quick and carries no radiation. Weighed against the alternative — telling a frightened man he is probably fine without having looked — I think it is the right trade. You should know it is a more thorough approach than the guideline minimum.
A caveat I want to state plainly, because honesty is more useful to you than false comfort: 40 is a convention, not a biological cliff. A 36-year-old with a strong family history of prostate cancer, or with bleeding that has recurred six times, gets assessed as though he were over 40. Guidelines are built for populations. You are one man.
The red flags that change my advice
These are the features that move you from “reassure and review” to “investigate properly”. If any of them apply, book an appointment rather than waiting it out.
Read them as a checklist, not as a prophecy — most men who have one of these still turn out to have something benign.
- You are over 40, particularly with a family history of prostate cancer.
- It has happened repeatedly, or has persisted for more than about a month.
- There is blood in your urine as well. This shifts the search to the urinary tract and needs proper assessment.
- Pain on passing urine, on ejaculating, or in the lower back, pelvis, perineum or scrotum.
- Fever, chills, or feeling systemically unwell — this suggests active infection.
- A lump, swelling or tenderness in a testicle.
- You are on anticoagulants, have a known bleeding disorder, or have uncontrolled high blood pressure (Bhaduri, 1999).
I want to underline the blood pressure point, because it is the one nobody checks. Hematospermia has been reported as the presenting sign of malignant hypertension (Bhaduri, 1999) and of severe hypertension in an otherwise well man (Ambakederemo, 2015). A blood pressure cuff costs nothing and takes thirty seconds. If you see blood in your semen and nobody has measured your blood pressure, that consultation was incomplete.
Private 1-on-1 consultation
Seen blood in your semen? Get a straight answer, not a scan you did not need.
A private, unhurried consultation with a practising andrologist — the right examination for your age, the two or three tests that actually change the answer, and an honest verdict on whether this needs treating at all.
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The tests I run on every man with blood in his semen
This is the section I would want to read if it were me, so I will be direct about it. In my practice testing is not optional and it is not staged by age. Everybody gets the same short panel, and only after it comes back clean do I use the word “harmless”.
| Test | What I am looking for |
|---|---|
| Complete blood count | Anaemia, an infective picture, and any hint of a bleeding or clotting problem |
| Urine routine | Blood, pus cells and protein — the fastest way to see whether the urinary tract is involved at all |
| Urine culture and sensitivity | A real organism, and which antibiotic will actually treat it — rather than a guess |
| STI screen (where there has been exposure) | Chlamydia, gonorrhoea and the rest — frequently silent in men and trivially treatable once found |
| PSA | Prostate cancer. The test that found every cancer in the 300-man series (Ng, 2013) |
| Digital rectal examination | Prostate size, nodules, tenderness. Two minutes, and not optional |
| Blood pressure | Severe hypertension, which is a documented cause and which nobody checks (Bhaduri, 1999) |
| Transrectal ultrasound | Seminal vesiculitis, prostatitis, stones and cysts — the things that are actually there (Wang, 2020) |
Three of those deserve a word of explanation, because they are the ones patients query.
Why the ultrasound, if it is probably nothing? Because “probably nothing” is not a diagnosis, and because seminal vesiculitis and prostatitis are the two conditions most likely to be sitting underneath this — both treatable, neither visible from the outside. A prostatitis that is quietly driving recurrent bleeding will keep driving it until somebody treats it.
Why a semen culture as well, sometimes? Where prostatitis or seminal vesiculitis is suspected, a semen culture and sensitivity can name the organism when the urine culture is unhelpful. It also matters for fertility: bacteria in semen appear to increase sperm DNA fragmentation through oxidative stress (Lee, 2026), so an untreated seminal infection is doing more damage than the bleeding you can see.
The tests I deliberately skip
What I do not order. Flexible cystoscopy, kidney ultrasound and urograms, for a first presentation. The evidence is explicit that these have a very poor diagnostic yield and are not recommended (Ng, 2013). If a clinic offers you a cystoscopy for a single painless episode at 32, ask them what they expect to find.
And where the bleeding refuses to settle despite all of the above, MRI outperforms ultrasound substantially: in men with genuinely intractable haematospermia, MRI reached a positive diagnostic rate of 95.7% against 39.1% for transrectal ultrasound (Han, 2021). That is the point at which I escalate — not before.
One honest caveat on MRI, because I dislike one-sided evidence. In men with hematospermia who had a normal PSA and a normal rectal examination, MRI still flagged 28.9% as suspicious, and cancer was found in a quarter of those who went on to biopsy — median age 61 (Turo, 2018). That is a selected referral population and it does not mean every 45-year-old needs an MRI. But it does mean that in an older man with persistent bleeding, a normal PSA is reassuring rather than conclusive.
Treatment: what actually works
Once the work-up is clean, the honest answer for most men is that the correct treatment is no drug at all. Hematospermia is generally benign and self-limited, and reassurance is frequently the entire management (Partin, 2025; Klevecka, 2005). That is not neglect — but note the order. Reassurance is what you earn after the tests, not what you are given instead of them. Handing a man antibiotics and a pat on the back without a culture, a PSA or a scan is not conservative management; it is guessing.
Where treatment is indicated, it follows the cause rather than the symptom (Drury, 2022):
- Proven infection — targeted antibiotics, guided by the culture and sensitivity rather than guesswork.
- Seminal vesiculitis or prostatitis — the commonest treatable finding of all, and the reason the ultrasound is worth doing. A proper course, long enough to actually clear it, plus anti-inflammatories.
- Inflammation without infection — anti-inflammatories, and time.
- An enlarged prostate with fragile vessels — medication to shrink the prostate can stop recurrent bleeding, though it takes months to work.
- Uncontrolled hypertension — treat the blood pressure. The bleeding follows.
- Stones, cysts or obstruction — endoscopic treatment via the ejaculatory duct is effective for genuinely intractable cases, and modern seminal vesiculoscopy is exactly what those MRI findings are used to plan (Han, 2021).
- Anticoagulants — never stop them yourself. This is a conversation with the doctor who prescribed them.
What has no established role: haemostatic tablets, “cooling” tonics, semen-purifying capsules, and the various proprietary powders sold for this in India. If a product claims to clean or purify your semen, you are being sold something.
How long does blood in semen last?
Most men want a number here, so let me give the honest range rather than a comfortable one — and it is longer than the internet will tell you.
A single episode is exactly that: many men see it once and never again. Where it is a discrete episode, the mean duration in one series was about 16 days (Khudhur, 2023).
But that is the length of an episode, not the length of the condition. What I actually tell my patients, once their tests are clear, is to expect the tendency to settle over eight months to a year. During that window it may come and go — a clear month, then a streak, then nothing again. That is the normal shape of it, and men who are not warned about it panic all over again at week ten.
What the published follow-up actually shows
The published follow-up supports that timeframe. In the largest endoscopic series, hematospermia had disappeared or greatly improved in 89.7% of men at twelve months, and among the small number who recurred the median time to recurrence was 7.5 months (Wang, 2020).
After a prostate biopsy the timeline is different and entirely expected: blood can appear in the semen for several weeks and needs no treatment at all (Aus, 1994; Loeb, 2013).
Stop masturbating until the bleeding has stopped. Every ejaculation contracts the same inflamed seminal vesicle you are trying to let heal. Men who keep checking — and checking means ejaculating — are the ones whose bleeding drags on longest. This is not about masturbation being harmful in general; it plainly is not, and it did not cause this. It is about giving a healing surface a few weeks of peace.
Do not actively try for a baby until the semen runs clear. The reason is in the next section, and it is a real one.
My practical rule on escalation: if it has settled inside the year and the work-up was clean, you are done. If it is still happening beyond a year, or it stopped and came back repeatedly, that is when MRI and a look inside the seminal tract genuinely earn their place (Hosseinzadeh, 2017; Wang, 2020).
And one instruction I give every man: stop checking. Several men have told me they began examining every ejaculate on tissue paper under a bright light. That habit converts a resolved medical event into a months-long anxiety disorder, and it is why the next section exists.
What does not cause blood in semen
Half of my consultation time on this topic goes on dismantling things men have already read or been told. These are the ones that come up almost every week.
Things that are not causing this
Masturbation caused this
It did not — see what daily ejaculation actually does. I still ask you to stop while it heals, which is a different thing entirely.
“Losing” too much semen
Semen is not stored blood and does not deplete your body. This belief drives more distress in India than the bleeding itself.
Heat, spice or “hot” foods
No published cause list contains chillies, mangoes or body heat. Diet is not why this happened.
It automatically means cancer
Malignancy and trauma together account for roughly 4–13% of all cases (Klevecka, 2005), and cancer is the smaller share.
It will make you infertile
Not permanently — your testicles are fine. But do wait until the semen runs clear before trying to conceive (Rijsselaere, 2004).
Your partner is in danger
The blood itself poses no risk to her. Only an untreated STI would — which is why testing, not panic, is the answer.
The second card deserves a sentence of its own, because it is the question I am asked more than any other in Tamil and in Hindi: is semen made from blood? No. Semen is a secretion produced by the prostate and seminal vesicles. The old belief that many drops of blood are consumed to make one drop of semen has no basis in physiology — and it is precisely why seeing actual blood in semen produces such disproportionate fear in Indian men. Two entirely separate ideas collide, and the result is genuine terror.
Does it affect fertility, and is your partner at risk?
Two questions, and both deserve a straight answer.
Fertility — and why I ask couples to wait. Hematospermia does not make you permanently infertile. Your testicles are not the problem and nothing here damages your long-term ability to father a child. But while there is visibly blood in the semen, that semen is genuinely poorer at doing its job, and I do not think couples should be spending that window trying.
Why blood in my sperm harms the sperm itself
Here is the mechanism, because you deserve the reasoning rather than an instruction.
Red blood cells do not sit inertly in semen. They break down. When they lyse they release free haemoglobin and iron into the seminal fluid, and that is where the damage comes from. In controlled work on blood-contaminated ejaculates, admixed blood clearly harmed sperm motility, membrane integrity and acrosome status — and crucially, the harm tracked to the red cells specifically, not to plasma or serum, with free haemoglobin reproducing the effect on its own (Rijsselaere, 2004).
Two honest caveats, because this is a point where it would be easy to overstate the evidence. That work was done in animal samples and the effect was clearest in stored and frozen sperm rather than in natural conception, and the human data on hematospermia and conception rates is thin. What the human literature does say is that compromised fertility is a recognised consequence of hematospermia, particularly where sperm is being frozen for later use (Drury, 2022) — which fits the same mechanism exactly.
There is a second route to the same advice. If the bleeding is being driven by a seminal infection, that infection is independently harming sperm DNA: bacteria in semen appear to raise sperm DNA fragmentation significantly through oxidative stress (Lee, 2026). So the very thing causing the blood may also be damaging the genetic payload of the sperm.
Put those together and my position is straightforward, and I accept that it is more cautious than the guidelines require: treat the cause, wait until the semen runs clear, then try. You are not losing years. You are losing a few months, in exchange for not conceiving on your worst sperm.
Once the bleeding has stopped, get a semen analysis and read the report properly rather than glancing at it. If you were already struggling to conceive before any of this began, that is a separate problem and it deserves its own assessment.
Is your partner at any risk?
Your partner. The blood itself carries no risk to her. The only genuine concern is a sexually transmitted infection that has not been diagnosed — which is an argument for testing, not for abstinence and silence. If you both get screened and it is clear, there is no reason to stop having sex.
And there is a third thing here that almost no medical page will say to you, so I will. This symptom does real damage to men’s sex lives, and that damage is documented: anxiety that suppresses libido, awkwardness with a partner, and a measurable knock-on risk of erectile difficulty (Drury, 2022). I have seen men develop situational erectile dysfunction months after the bleeding stopped, purely from the fear of seeing it again. If that has happened to you, it is a recognised consequence of the condition — not a separate failing on your part.
Two causes that matter in India and get left out
Almost every page ranking for this term is written for a British, American or Australian patient. Two things get omitted as a result, and both are relevant if you are reading this from India.
Genitourinary tuberculosis. Tuberculosis sits on the classical list of conditions that predispose to hematospermia, alongside prostatitis, epididymitis and urinary stones (Klevecka, 2005; Sampalmieri, 1992). In a country with India’s TB burden this is not an exotic footnote. It is worth thinking about specifically when the bleeding is persistent, when there is scrotal swelling or a thickened epididymis, or when there are constitutional symptoms such as evening fevers, night sweats or weight loss. Seminal-vesicle tuberculosis is important enough that it is formally excluded before endoscopic treatment for hematospermia (Zhou, 2018).
Undiagnosed sexually transmitted infection. Not because Indian men are at unusual risk, but because testing rates are low and shame is high. Men delay, self-medicate with a friend’s antibiotic course, and arrive months later. If there is any exposure history at all, a screen at a proper STD clinic costs little and settles the question. Untreated gonorrhoea is worth excluding on its own merits, quite apart from the bleeding.
Dr Shahs notes (from my clinical observation)
Six things I have learned from these consultations that you will not find in a guideline.
1. Reassurance without a work-up is worthless — to both of us.
This is the one I feel most strongly about. A man who is told “it is probably nothing” by someone who has not taken his blood pressure, cultured his urine or looked at his seminal vesicles does not actually feel reassured. He goes home and searches again at midnight. Whereas a man who has been examined, cultured, PSA-tested and scanned, and is then told the same sentence, believes it — because now it means something. The tests are not defensive medicine. They are what makes the reassurance land.
2. Every man has already photographed it.
He shows me the picture within the first minute. I have stopped finding this odd — it is a sensible thing to do, and I would rather see the photograph than hear an anxious description of it. If this has happened to you, take the picture. It is genuinely useful to whoever sees you.
3. The severity a man reports has no relationship to what I find.
My most alarming-looking case, measured in sheer colour, was a 29-year-old with nothing wrong at all. Meanwhile the prostate cancers I have picked up were in men who mentioned a faint pink tinge almost as an afterthought, on their way out of the room about something else. Volume of colour tells you nothing. Age and recurrence tell you everything.
4. Almost everyone arrives having already taken antibiotics.
A pharmacist, a relative, or a previous doctor has handed over a course before any culture was taken. Given that inflammation outnumbers proven infection roughly three to one in these men (Gönültaş, 2025), most of that prescribing is treating nobody. Worse, it makes a subsequent culture harder to interpret.
5. Nobody has checked the blood pressure.
I have now made it automatic. In a small number of men it is the finding that actually matters, and it is the cheapest test in the building.
6. The follow-up problem is anxiety, not bleeding.
The bleeding usually stops on schedule. What persists is the checking behaviour, the avoidance of sex, and in some men the erectile difficulty that grows out of both. When a man returns to me three months later, it is almost never because the blood came back. So I now say it explicitly at the first visit: this will settle, and I do not want you inspecting it.
Getting blood in semen checked in Chennai
A proper assessment for this is short, cheap and mostly clinical. It should include:
- An unhurried history — how many episodes, over how long, and what else is going on.
- A blood pressure reading.
- A genital examination and a digital rectal examination.
- A complete blood count, urine routine, and urine culture and sensitivity — with an STI screen where the history warrants it.
- A PSA, whatever your age.
- A transrectal ultrasound, to exclude seminal vesiculitis, prostatitis, stones and cysts.
If a clinic sends you straight for a cystoscopy after a single painless episode at 30, or hands you antibiotics without taking a urine sample, you have been processed rather than assessed. Equally, if you are 55 and nobody performed a rectal examination, the most important part was skipped.
Dr Shah's Clinic — T. Nagar, Chennai
Dr Shah Dupesh, MBBS, DCE, FASM — Consultant Andrologist & Sexologist, practising in Chennai for over twelve years.
Frequently asked questions
Should I worry about blood in my sperm?
Usually not — but get tested before you accept that answer. If you are under 40 and it happened once without pain, the odds are strongly that it is benign and self-limiting (Gönültaş, 2025). Worry is warranted if you are over 40, if it keeps happening, or if there is pain, fever, or blood in your urine as well.
Can blood in sperm be cancerous?
Rarely. Malignancy and trauma together account for roughly 4–13% of cases (Klevecka, 2005), and in the 2025 multicentre series malignancy was found in 5.8% of the over-40 or recurrent group (Gönültaş, 2025). Every prostate cancer detected in a 300-man series occurred in a man over 40 with a raised PSA or an abnormal rectal examination (Ng, 2013).
How long until blood in sperm goes away?
A single episode often lasts around 16 days (Khudhur, 2023), but the underlying tendency takes much longer to settle. Once your tests are clear I tell patients to expect eight months to a year, with the bleeding coming and going during that window. The published follow-up agrees: 89.7% of men were clear or greatly improved by twelve months (Wang, 2020). After a prostate biopsy it can continue for several weeks and needs no treatment (Aus, 1994).
Why is there blood in my sperm but not in my pee?
Because the bleeding is in the reproductive tract — usually the seminal vesicles or prostate — which only empties on ejaculation. The urinary tract empties separately. Blood in both is a different finding and needs assessment.
Why is there blood in my sperm when I abstain?
Prolonged abstinence has historically been linked to hematospermia (Klevecka, 2005). Semen sits longer in the seminal vesicles, and old blood that would otherwise have cleared appears in a later ejaculate — which is also why it often looks brown rather than red.
What is the main cause of hematospermia?
Medical procedures, above all transrectal prostate biopsy, are the most common identified cause overall (Drury, 2022). Excluding procedures, inflammation of the prostate or seminal vesicles leads at 38.1% (Gönültaş, 2025). In up to 70% of men no cause is ever found (Klevecka, 2005).
How do I stop blood in my sperm?
First get tested — blood count, urine routine and culture, PSA, and a transrectal ultrasound — because the commonest treatable finding is seminal vesiculitis, present in 78.3% of men with persistent bleeding (Wang, 2020). Where a cause is found, treatment follows the cause: antibiotics guided by culture, anti-inflammatories, blood-pressure control, or endoscopic treatment for stones (Drury, 2022). Where nothing is found, it stops by itself (Partin, 2025) — and in the meantime stop masturbating until it clears.
Can I try for a baby? Does blood in sperm affect fertility?
Wait until the semen runs clear. Hematospermia does not make you permanently infertile — your testicles are unaffected — but while red cells are present they lyse and release free haemoglobin, and that specifically harms sperm motility, membrane integrity and acrosome status (Rijsselaere, 2004). If a seminal infection is driving the bleeding it is independently raising sperm DNA fragmentation through oxidative stress (Lee, 2026). So treat the cause, wait for the semen to clear, get a semen analysis, then try. A few months lost is a better trade than conceiving on your worst sperm.
Can I masturbate if I have blood in my semen?
I ask my patients to stop until the bleeding has stopped. Masturbation did not cause this and it is not harmful in general, but every ejaculation contracts the same inflamed seminal vesicle you are trying to let settle — and men who keep checking, which means keep ejaculating, are the ones whose bleeding drags on longest. Give it a few weeks of peace.
Should I be worried if it keeps coming back over several months?
Not automatically — that is the normal shape of it. Once the work-up is clear, expect it to come and go across eight months to a year before settling for good. Among men who did recur in the largest follow-up series, the median time to recurrence was 7.5 months (Wang, 2020). What would concern me is bleeding still going strong beyond a year, or new red flags appearing.
Can blood in sperm affect a woman?
The blood itself poses no risk to your partner. The only real concern is an undiagnosed sexually transmitted infection, which is a reason to get tested rather than a reason to avoid sex.
Is sperm made from blood?
No. Semen is a secretion produced mainly by the seminal vesicles and prostate; sperm are made in the testicles. The traditional belief that semen is distilled from many drops of blood is not physiology, and it is a major reason this symptom frightens Indian men so badly. I have addressed the wider belief in detail in my article on what daily ejaculation actually does to your body.
Does masturbation cause blood in semen?
Ordinary masturbation does not. Genuinely vigorous or unusually prolonged sexual activity is listed as a traumatic cause, but routine frequency is not a recognised cause of hematospermia.
What does brown or rust-coloured semen mean?
Old blood clearing out rather than fresh bleeding. It generally means the bleeding has already stopped, which makes it less concerning than bright red — though the same age and recurrence rules still apply.
Do I need a scan or a cystoscopy?
A scan, yes — a cystoscopy, almost certainly not. I do a transrectal ultrasound on every man with blood in his semen, because that is what shows seminal vesiculitis, prostatitis, stones and cysts (Wang, 2020). Cystoscopy, kidney ultrasound and urography are a different matter: they have a very poor diagnostic yield at first presentation and I do not order them (Ng, 2013). Note that international guidelines are more conservative than I am and say imaging can be omitted in a young man with one transient episode (Hosseinzadeh, 2017); I image anyway, for the reasons set out above.
Which doctor should I see for blood in semen?
An andrologist or urologist. The assessment is mostly clinical — history, examination, blood count, urinalysis and culture, blood pressure, PSA and a transrectal ultrasound — so what you need is someone who will do those properly rather than order the most expensive test available.
References
- Drury RH, King B, Herzog B, et al. Hematospermia Etiology, Diagnosis, Treatment, and Sexual Ramifications: A Narrative Review. Sexual medicine reviews. 2022. PMID: 34538619.
- Gönültaş S, Baydilli N, Solakhan M, et al. Etiology of Hematospermia in Turkish Men: Multicentric Study. Balkan medical journal. 2025. PMID: 40326826.
- Ng YH, Seeley JP, Smith G. Haematospermia as a presenting symptom: outcomes of investigation in 300 men. The surgeon : journal of the Royal Colleges of Surgeons of Edinburgh and Ireland. 2013. PMID: 22682581.
- Klevecka V, Jatulis A, Kraniauskas V, et al. [Hemospermia]. Medicina (Kaunas, Lithuania). 2005. PMID: 15864011.
- Wang XS, Li M, Shao GF, et al. Real-time transrectal ultrasound-guided seminal vesiculoscopy for the treatment of patients with persistent hematospermia: A single-center, prospective, observational study. Asian journal of andrology. 2020. PMID: 31898586.
- Rijsselaere T, Van Soom A, Maes D, et al. Effect of blood admixture on in vitro survival of chilled and frozen-thawed canine spermatozoa. Theriogenology. 2004. PMID: 15036988.
- Bhaduri S, Riley VC. Haematospermia associated with malignant hypertension. Sexually transmitted infections. 1999. PMID: 10448405.
- Ambakederemo TE, Dodiyi-Manuel ST, Ebuenyi ID. Bloody semen, severe hypertension and a worried man. The Pan African medical journal. 2015. PMID: 26175817.
- Suh Y, Gandhi J, Joshi G, et al. Etiologic classification, evaluation, and management of hematospermia. Translational andrology and urology. 2017. PMID: 29184797.
- Partin M, Clark R, Newman R, et al. Male Sexual Disorders: Ejaculatory Disorders. FP essentials. 2025. PMID: 40377952.
- Leocádio DE, Stein BS. Hematospermia: etiological and management considerations. International urology and nephrology. 2009. PMID: 18563615.
- Khudhur Z, Mohammad U, Saeed N. HAEMATOSPERMIA: CAUSES AND ASSOCIATED CHANGES IN SEMEN ANALYSIS IN NORTH OF IRAQ. Georgian medical news. 2023. PMID: 37042592.
- Hosseinzadeh K, Oto A, Allen BC, et al. ACR Appropriateness Criteria. Journal of the American College of Radiology : JACR. 2017. PMID: 28473071.
- Loeb S, Vellekoop A, Ahmed HU, et al. Systematic review of complications of prostate biopsy. European urology. 2013. PMID: 23787356.
- Bokhorst LP, Lepistö I, Kakehi Y, et al. Complications after prostate biopsies in men on active surveillance and its effects on receiving further biopsies in the Prostate cancer Research International: Active Surveillance (PRIAS) study. BJU international. 2016. PMID: 26765682.
- Aus G. Prostate cancer. Mortality and morbidity after non-curative treatment with aspects on diagnosis and treatment. Scandinavian journal of urology and nephrology. Supplementum. 1994. PMID: 7542397.
- Gill S, Li J, Thomas J, et al. Patient-reported complications from fiducial marker implantation for prostate image-guided radiotherapy. The British journal of radiology. 2012. PMID: 22253345.
- Lee JH, Cho MC. Impact of bacteriospermia on sperm DNA fragmentation: a narrative review. Translational andrology and urology. 2026. PMID: 42293827.
- Han H, Lei HE, Zhang XD, et al. Magnetic resonance imaging compared to ultrasound as the preferred method for diagnosing intractable haematospermia. Andrologia. 2021. PMID: 33955038.
- Turo R, Horsu S, Calinciuc A, et al. Is magnetic resonance imaging helpful in detecting significant prostate cancer in patients with haematospermia, normal prostate specific antigen level and digital rectal examination. A single institution, observational, and retrospective study in a United Kingdom hospital. Central European journal of urology. 2018. PMID: 29732203.
- Sampalmieri G, Giancola FL, Cabras A. [Hemospermia: cause, clinical significance and our experience]. Rivista europea per le scienze mediche e farmacologiche = European review for medical and pharmacological sciences = Revue europeenne pour les sciences medicales et pharmacologiques. 1992. PMID: 1484985.
- Zhou KY, Yang WZ, Cui ZY, et al. [F4.8 visual miniature nephroscope for the diagnosis and treatment of hematospermia]. Zhonghua nan ke xue = National journal of andrology. 2018. PMID: 30173458.
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