Haematospermia is usually benign and self-limiting, particularly in men under 40 with a single episode. Age over 40, persistence or recurrence, and blood in the urine as well are the features that move a man into a higher-risk group. There is no NICE guideline specific to haematospermia β base referral on age, persistence, examination, haematuria, infection risk and local urology/sexual-health pathways.
Prostate feels malignant β NICE NG12 (updated April 2026) Hard, nodular, irregular or asymmetric prostate on DRE β suspected cancer pathway referral for prostate cancer, whatever the PSA.
PSA above the age-specific range β NICE NG12 Haematospermia alone is not an NG12 criterion; consider PSA and DRE with prostate symptoms/signs, visible haematuria, abnormal DRE, recurrent/persistent episodes or significant risk factors. If tested: 40β49 >2.5; 50β59 >3.5; 60β69 >4.5; 70β79 >6.5 ng/mL (Β΅g/L) β suspected cancer pathway referral. Under 40 and 80 or over: clinical judgement.
Visible haematuria β NICE NG12 Aged 45 or over with unexplained visible haematuria without UTI, or visible haematuria persisting or recurring after a treated UTI β suspected cancer pathway referral (bladder/renal). Visible haematuria is also an NG12 reason to consider PSA and DRE.
Age over 40 + persistent or recurrent Repeated episodes, or blood persisting over several weeks β clinical review, urine testing, PSA/DRE where appropriate, and local urology pathway if unexplained or troublesome. Not automatically a suspected cancer referral if assessment is reassuring (local practice, not an NG12 criterion).
Testicular change β NICE NG12 Non-painful enlargement or change in shape or texture of a testis β consider a suspected cancer pathway referral; unexplained or persistent testicular symptoms β consider urgent direct-access ultrasound. Sudden severe testicular pain β possible torsion: 999 or A&E immediately. Epididymal tenderness/swelling β consider infection, but confirm by examination and testing.
Fever, rigors, perineal pain Possible acute bacterial prostatitis or epididymo-orchitis with sepsis (temperature >38Β°C, rigors, tachycardia, hypotension) β same-day / emergency assessment.
Retention Painful inability to pass urine (prostatitis, clot) β same-day catheterisation and urology.
Weight loss, bone pain, night sweats Systemic features alongside haematospermia β examine thoroughly, PSA, and the relevant NG12 route.
Bleeding elsewhere Bruising, epistaxis, gum bleeding or haematuria on anticoagulants β check INR (warfarin) or FBC and clotting; think coagulopathy or liver disease.
Travel to endemic areas Fresh-water exposure in sub-Saharan Africa or the Nile valley β urogenital schistosomiasis (Schistosoma haematobium) is a recognised cause.
NG12 has no recommendation specific to haematospermia, so the safety step borrows the adjacent NG12 criteria: a prostate that feels malignant is a direct referral, a PSA above the age-specific range (when tested for an appropriate indication) is a referral, and visible haematuria has its own bladder-cancer route. Beyond that, risk is stratified by age, persistence and associated haematuria β the approach taken in the international EAU guidelines on sexual and reproductive health (haemospermia section), which advise PSA and DRE in counselled men over 40. The absolute cancer risk is small but real: in a US screening cohort, 13.7% of men reporting haematospermia were diagnosed with prostate cancer versus 6.5% overall (Han et al, J Urol 2004), and a UK tertiary series of 393 men investigated for haematospermia found prostate cancer in 5.3% overall and 7.2% of those aged 40 or over (Current Urology 2022). Fever with perineal pain needs same-day assessment because acute bacterial prostatitis can progress to sepsis or retention.
2
Diagnose
History β Characterise the haematospermia
A systematic history sorts most men into the "reassure" or the "assess further" group.
Duration and frequency
First episode vs recurrent; how many ejaculations affected; how long it has persisted. Persistence or recurrence is the main driver of further investigation.
Is it really semen?
Blood seen only in a condom may be from the partner (e.g. vaginal or cervical bleeding); blood in urine as well as semen changes the pathway.
Colour description
Bright red (recent bleed) vs brown or dark (older blood). Colour and amount are not reliable guides to cause β dark semen does not localise the source or exclude malignancy or infection.
Associated pain
Dysuria, perineal, testicular or ejaculatory pain β infective or inflammatory cause.
Urinary symptoms
LUTS (frequency, nocturia, hesitancy, urgency, poor flow) or erectile dysfunction β NG12 prompts PSA and DRE; visible haematuria β bladder and renal pathway.
Sexual history
New or multiple partners, condom use, urethral discharge, symptoms in partners β STI risk and the need for testing and partner notification. Include oral, vaginal and receptive/insertive anal exposure; sexual assault where relevant; travel and country of exposure; HIV PrEP use; previous syphilis or STI treatment.
Recent procedures
Prostate biopsy, vasectomy, catheterisation, cystoscopy, radiotherapy or brachytherapy β iatrogenic cause, usually self-limiting.
Prostate cancer in a father or brother; BRCA2 mutation in the family; Black ethnicity β all raise prostate cancer risk.
Travel history
Fresh-water swimming or wading in schistosomiasis-endemic areas (sub-Saharan Africa, Nile valley).
Ideas, concerns, expectations
Most men fear cancer or an STI; some worry about fertility or partner safety. Name the concern early.
History does most of the risk stratification. Recent prostate biopsy or other instrumentation explains a large share of cases and needs no work-up beyond reassurance, while a young man with a single episode, no other symptoms and a normal examination is managed with explanation and review. Age over 40 with persistence or recurrence, urinary symptoms, haematuria, or a strong family history moves him towards PSA, DRE and a lower threshold for urology. Checking that the blood is truly from the ejaculate (not the partner, not the urine) prevents both false reassurance and needless investigation. Exploring the man's own fear β usually cancer, sometimes infection or fertility β shapes an explanation that he will actually accept.
3
Diagnose
Classification β Identify likely aetiology
Classify by most likely cause group to direct investigations efficiently.
Iatrogenic
Post-prostate biopsy (very common, can last several weeks), vasectomy, catheterisation, cystoscopy, radiotherapy β reassure; review if it persists beyond the expected period.
Infective / inflammatory
Prostatitis, epididymo-orchitis, urethritis (chlamydia, gonorrhoea, Mycoplasma genitalium), seminal vesiculitis, UTI β treat the cause.
Idiopathic
No identifiable cause after assessment β the commonest outcome in younger men; usually resolves spontaneously.
Vascular
Uncontrolled hypertension, prostatic varices, vascular malformations β control BP; imaging if persistent.
Structural / obstructive
Seminal vesicle or ejaculatory duct cysts and calculi, midline prostatic cysts, benign prostatic enlargement β urology-led imaging (transrectal ultrasound or MRI).
Systemic
Anticoagulation or antiplatelets, bleeding disorders, liver disease β review medicines and clotting.
Malignant
Prostate cancer (the main concern); rarely bladder, testicular or seminal vesicle tumours β NG12 routes.
Parasitic
Schistosomiasis after travel β urine microscopy and serology; infectious diseases referral.
Classification drives investigation and management. Idiopathic haematospermia (most common in young men) needs minimal work-up, and iatrogenic bleeding after biopsy is expected and self-limiting. Infective causes need targeted microbiological tests and, for STIs, partner management. Structural causes such as seminal vesicle or ejaculatory duct cysts are found on specialist imaging and are the usual explanation for persistent haematospermia in otherwise well younger men. The key decision in primary care is not to find the exact cause but to separate the benign, self-limiting group from the higher-risk group that needs PSA, DRE and urology.
Always examine (with a chaperone offered). Findings significantly alter the management pathway.
Vital signs
BP (uncontrolled hypertension can contribute); temperature, pulse (sepsis from prostatitis or epididymo-orchitis).
Abdomen
Palpable bladder (retention), suprapubic or renal angle tenderness, masses.
External genitalia
Urethral discharge (STI); meatal lesions; penile lesions. Penile mass or ulcerated lesion after an STI has been excluded, or persisting after STI treatment β consider a suspected cancer pathway referral (NICE NG12).
Scrotal exam
Testicular size, consistency and masses (testicular cancer); epididymal tenderness or swelling (consider epididymo-orchitis, confirmed by examination and testing); varicocele. A testicular mass, or non-painful enlargement or change in shape or texture β consider a suspected cancer pathway referral; unexplained or persistent testicular symptoms β consider urgent direct-access ultrasound (NICE NG12) β do not be reassured by transillumination or absence of pain.
Digital rectal exam (DRE)
Offer when there are prostate symptoms, persistent/recurrent haematospermia, abnormal PSA, visible haematuria or clinical concern about prostate disease: size, consistency, nodularity, tenderness. Hard, nodular or irregular β NG12 referral. Exquisitely tender, boggy and hot β acute prostatitis (avoid forceful examination; do not perform prostatic massage).
Lymph nodes
Inguinal lymphadenopathy is non-specific β local inflammation, ulceration or STI; also lymphoma or penile/anal pathology.
Signs of bleeding
Bruising, petechiae, stigmata of chronic liver disease.
Examination is where the NG12 criteria are triggered or excluded. A prostate that feels malignant on DRE is a suspected cancer pathway referral in its own right under NICE NG12 (updated April 2026), regardless of the PSA value, so offer DRE whenever prostate disease is a concern. Testicular examination can reveal a painless mass, which carries its own NG12 route. A tender prostate with fever points to acute bacterial prostatitis, where the examination should be gentle and the priority is antibiotics and a sepsis assessment. In the SCA, explaining why an intimate examination is needed, offering a chaperone and seeking consent are marked just as much as the findings.
5
Diagnose
Investigations β Risk-stratified workup
Investigations guided by age, persistence, examination and risk. Avoid over-investigating young men with single episodes.
All men
Urine dipstick and MSU β UTI and haematuria; BP.
PSA (selected men)
PSA after counselling β not a stand-alone haematospermia test. Consider with prostate symptoms/signs, visible haematuria, abnormal DRE, recurrent/persistent episodes or significant risk factors. Avoid during UTI or acute prostatitis, for at least 6 weeks after treating a proven UTI, and for 6 weeks after prostate biopsy or other significant prostate instrumentation (per local laboratory guidance); avoid ejaculation and vigorous exercise for 48 hours before. Document the reason for testing; interpret with age, prostate size, family history, ethnicity and symptoms against the NG12 age-specific ranges.
STI screen
Chlamydia and gonorrhoea NAAT on first-void urine, plus pharyngeal and rectal NAAT according to exposure; HIV (fourth-generation test; repeat if exposure was within 45 days) and syphilis testing when an STI is possible; hepatitis B/C according to risk; HSV and syphilis lesion testing if ulcers are present. Urgent GUM referral for suspected gonorrhoea or Mycoplasma genitalium; partner notification via sexual-health services.
Bleeding tendency
FBC, clotting, INR if on warfarin, if there is bleeding elsewhere, or if liver disease suspected; LFTs.
Haematuria
Visible haematuria β NG12 bladder route (45+). Confirm the blood is urinary rather than urethral, seminal or partner-related; do not attribute visible haematuria to anticoagulation without investigation. If UTI is suspected, send urine and reassess after treatment if haematuria persists. Dipstick blood alone does not establish cancer β interpret with microscopy where available, renal function, ACR and context; follow NG12 for 60+ with dysuria or raised white cell count, and local haematuria pathways for non-visible haematuria, renal impairment or abnormal ACR.
Travel history
Target testing to freshwater exposure in an endemic area, especially with haematuria, urinary symptoms or eosinophilia: Terminal urine for schistosome ova (timed or repeated samples), serology (may be negative early and does not distinguish active from previous exposure), eosinophil count. Seek tropical/infectious-disease advice.
Do NOT routinely order
Transrectal ultrasound, MRI or semen culture β these are urology-led investigations.
Men under 40, single episode
No haematuria, systemic symptoms, STI risk requiring testing, testicular/prostate abnormality or significant procedure history, with normal examination and urine testing: reassurance and safety-netting are usually appropriate, without further immediate investigation.
NICE NG12 (updated April 2026) sets age-specific PSA thresholds for referral: above 2.5 ng/mL at 40β49, 3.5 at 50β59, 4.5 at 60β69 and 6.5 at 70β79, with clinical judgement outside those ages. Government PSA-testing guidance for GPs advises avoiding ejaculation and vigorous exercise in the 48 hours before a test and avoiding testing within 6 weeks of a prostate biopsy or cystoscopy, because each can raise PSA; prostatitis and UTI raise it too, so a result taken during infection should be repeated after treatment. Blood tests for coagulation are targeted, not routine. Specialist imaging (transrectal ultrasound, MRI) belongs to urology, where it is used for persistent haematospermia and for older men. In the young man with a single episode and a normal assessment, extra tests add anxiety without benefit.
6
Refer
Referral Criteria β When to escalate
Suspected cancer pathway β NG12
Prostate feels malignant on DRE; PSA (tested for an appropriate indication) above the age-specific range; aged 45+ with unexplained visible haematuria (or persisting after treated UTI); consider for non-painful testicular enlargement or change in shape or texture.
Same-day
Fever with perineal pain and systemic features (acute prostatitis, epididymo-orchitis with sepsis); acute urinary retention.
Urology (non-cancer pathway)
Persistent or recurrent haematospermia (particularly over 40) that is unexplained or troublesome after review, urine testing and PSA/DRE where appropriate β via the local urology pathway; any age with haematospermia persisting despite treatment of an identified cause; suspected cyst or calculus.
Sexual health clinic
STI confirmed or strongly suspected; partner notification; Mycoplasma genitalium or resistant gonorrhoea.
Haematology / anticoagulation
Coagulopathy identified; INR out of range; bleeding on anticoagulation needing a riskβbenefit review.
Infectious diseases
Positive schistosomiasis testing or strong suspicion β tropical medicine/infectious diseases; do not treat automatically in primary care.
Primary care manage
Age under 40, single or short-lived episode, no red flags, no haematuria, normal examination β reassure and safety-net.
NICE NG12 (updated April 2026) directs a suspected cancer pathway referral when the prostate feels malignant or the PSA is above the age-specific range, and has separate routes for visible haematuria and testicular change. Haematospermia alone in an older man with a normal PSA and DRE does not meet an NG12 criterion, but persistence or recurrence still warrants clinical review and, if unexplained or troublesome, the local urology pathway β the EAU guidance (international) stratifies these men as higher risk and uses MRI and transrectal ultrasound to look for structural causes and cancer. Since October 2023, NG12's suspected cancer pathway is aligned to the Faster Diagnosis Standard (diagnosis or exclusion within 28 days). The GP's role is risk stratification, correct routing and safety-netting, not definitive investigation of complex haematospermia.
7
Treat
Treatment β Cause-directed management
Treatment is cause-specific. Most idiopathic cases require reassurance only.
Idiopathic / Age <40
Reassurance 1st line
Usually self-limiting. No medicine needed. Blood itself is not infectious, but an underlying STI may be β avoid sex or use condoms until STI assessment is complete if infection is possible.
Acute bacterial prostatitis
Antibiotic NICE NG110
Obtain MSU before antibiotics where this will not delay treatment. Choose the antibiotic per NICE NG110 and local antimicrobial guidance, guided by culture and susceptibility, previous antibiotics, local resistance, severity and renal function; review at 14 days and extend according to response. Same-day referral if systemically unwell, unable to tolerate oral treatment, in retention, immunocompromised or not improving. Do not perform prostatic massage. Fluoroquinolones only when other recommended antibiotics are inappropriate (MHRA Drug Safety Update, January 2024).
Chlamydia confirmed
Doxycycline Antibiotic
100 mg twice daily for 7 days for uncomplicated chlamydia (BASHH); manage haematospermia with urethral symptoms via the BASHH/local sexual-health pathway. Partner notification; abstain until treatment is completed and partners treated. Test for gonorrhoea, syphilis and HIV; assess for rectal infection where relevant.
Hypertension-related
Optimise BP control
NICE NG136 target under 80: clinic <140/90 mmHg (home or ambulatory <135/85). May resolve with adequate BP control.
Anticoagulant-related
Review anticoagulation
Do not stop automatically. Assess indication and thrombotic risk, renal function, INR if on warfarin, bleeding elsewhere and concurrent antiplatelet/NSAID use. Specialist or anticoagulation-service review may be required.
Not settling at reviewRe-examine (including DRE), PSA if not done, repeat urine tests; consider urology referral
Persistent or recurrentUrology referral for specialist imaging (MRI Β± transrectal ultrasound) β at any age if troublesome, and with a lower threshold over 40
Reassurance is the most powerful intervention for idiopathic haematospermia β anxiety about the symptom often exceeds clinical risk. Antibiotics are only for a demonstrated or strongly suspected infection. For acute bacterial prostatitis, NICE NG110 recommends a 14-day course then review, with the antibiotic guided by culture, previous exposure, local resistance, severity and renal function; since January 2024 the MHRA has restricted systemic fluoroquinolones to situations where other recommended antibiotics are inappropriate, because of disabling and potentially long-lasting adverse effects. Confirmed chlamydia is treated with doxycycline 100 mg twice daily for 7 days per BASHH, with partner notification. Blood pressure and anticoagulation are optimised, not simply stopped.
8
Lifestyle
Non-Pharmacological β Patient education and self-care
Reassurance first Many men are frightened. Explain that most cases, especially in younger men, have no serious cause and settle on their own.
Partner communication Blood itself is not infectious, but an underlying STI may be transmissible β use condoms or avoid sex until STI assessment is complete if infection is possible. If an STI is found, the partner needs testing and treatment too.
Blood pressure Home BP monitoring if hypertensive; NICE NG136 home target below 135/85 mmHg for adults under 80.
STI prevention Condoms with new partners. Signpost to local sexual health services or NHS online STI testing.
Alcohol Keep to 14 units a week or less, spread over several days β heavy drinking affects liver function and bleeding.
Prostate awareness For men 50 and over β and younger men at higher risk (Black ethnicity, family history of prostate cancer or BRCA2) β explain the PSA test's benefits and limitations; there is no national prostate screening programme.
After a biopsy Expect blood in semen for several weeks after prostate biopsy β no action needed unless urine bleeding, fever or retention.
Sexual activity No need to abstain for benign haematospermia once STI is excluded; abstain or use condoms while an STI is being assessed or treated.
Anxiety about haematospermia is often disproportionate to clinical risk, and clear, confident reassurance with a concrete plan reduces re-attendance and repeated testing. Specific advice lands better than general statements: what is expected after a biopsy, when sex is fine, what the partner needs to know. STI prevention matters because infection is a treatable cause in younger, sexually active men. Blood pressure control and alcohol moderation address the vascular and bleeding contributors. The prostate-awareness conversation follows the government's PSA-testing guidance for GPs, which supports informed choice rather than routine screening.
9
Safety
Follow-Up and Safety-Netting
Review
Arrange a review (for example at 4β6 weeks, or after a course of treatment): has it resolved? Check infection response; repeat MSU if haematuria; repeat PSA if it was taken during infection.
Persisting
If haematospermia continues or recurs despite treatment β local urology pathway (urgency according to age, examination, PSA and urine findings).
999 / emergency
Fever with rigors, perineal pain and feeling very unwell, or unable to pass urine β sepsis from prostatitis or acute retention. Sudden severe testicular pain β possible torsion; do not drive yourself.
Same-day GP
New visible blood in urine; worsening systemic symptoms; unable to tolerate antibiotics.
Re-refer if
PSA rises on repeat; DRE becomes abnormal; haematuria develops; weight loss, bone pain or night sweats appear.
Document
Age, episodes, examination findings including DRE, PSA with the age-specific range, urine results, plan and safety-net advice.
SCA phrasing
"Blood in the semen is alarming, but in most men it settles by itself and isn't caused by anything serious. Because this has come back and you're over 40, I'd like to check your urine and talk about examining your prostate and a PSA blood test. If you notice blood in your urine or get a fever, contact us the same day. If you can't pass urine at all, have a fever with shivering and feel very unwell, or get sudden severe pain in a testicle, call 999 or go to A&E β don't drive yourself."
The review serves two functions: confirming resolution (the majority) and catching the minority where pathology is emerging. A PSA taken during active prostatitis or UTI is unreliable and should be repeated once the infection has settled rather than acted on in isolation. Safety-netting for retention and sepsis is critical because acute prostatitis can escalate quickly, and new visible haematuria converts the problem into an NG12 bladder pathway. In the SCA, the examiner is looking for the balance between reassurance and appropriate testing: acknowledging the man's fear, explaining why age changes the approach, offering DRE and PSA with consent, and giving specific return advice.
Educational use only. Pathway based on: NICE NG12 Suspected cancer: recognition and referral (updated April 2026) β prostate, bladder and testicular recommendations; NICE NG110 Prostatitis (acute): antimicrobial prescribing (2018); MHRA Drug Safety Update on fluoroquinolones (January 2024); BASHH chlamydia guideline (2026); BASHH Summary Guidance on Testing for STIs (2023); NICE NG136 Hypertension in adults; GOV.UK PSA testing guidance for GPs; EAU Guidelines on Sexual and Reproductive Health β haemospermia section (international); Han et al, J Urol 2004; Current Urology 2022 (haematospermia cancer detection series). Always adapt to individual patient context and local guidelines. Not a substitute for clinical judgement.