Educational guide · not medical advice · read the disclaimer · in an emergency call 911
Hematospermia.com

Age matters

Blood in semen by age: under 40 vs 40 and over

Age 40 is the line most guidelines draw. It changes the tests, not the odds of a good outcome.

By the Hematospermia.com editorial teamUpdated Medical review pending
Illustration of a younger man and an older man walking and talking in a park.

Educational information only, not a diagnosis. Know when to get help.

On this page
  1. Under 40
  2. 40 and over
  3. Risk factors at any age
  4. About PSA
  5. Sources

Age is one of the biggest factors in how doctors approach blood in semen. The cut-off most guidelines use is 40 [NICE CKS] [AAFP] [RACGP].

Flow chart comparing typical checks for blood in semen under 40 (history, exam, urine test, STI tests if relevant) and 40 and over (adds prostate exam, PSA test and urology referral if no cause is found).
Typical checks by age. Based on NICE CKS, AAFP and RACGP guidance; your clinician may do more or less.

Under 40

In men under 40 without risk factors or other symptoms, hematospermia is usually self-limited [AAFP]. Infection of the urinary or genital tract is the most common identifiable cause [review].

  • Typical checks: history, examination, urine test, and STI testing if relevant [AAFP] [MSD].
  • If nothing is found after one episode, NICE advises reassurance and returning if it recurs [NICE].
  • Seek further assessment at any age if it keeps happening or persists [NICE].

40 and over

From 40, doctors are more thorough, because the chance of an important underlying cause such as prostate disease is higher [NICE] [review]. That doesn't mean cancer is likely. In men 40 and older, a recent procedure such as a prostate biopsy is the most common cause [AAFP].

  • Typical checks add a digital rectal exam of the prostate and a PSA blood test [RACGP] [AAFP].
  • NICE advises referring all men over 40 to urology when no cause is found in primary care [NICE].
  • A urologist may use ultrasound (including transrectal ultrasound), MRI or cystoscopy if needed [AAFP] [MSD].

Risk factors at any age

Guidance highlights these as reasons for a more thorough look: recurrent or persistent bleeding, blood in urine, a family history of prostate cancer, African or Black heritage (a prostate cancer risk factor), unexplained weight loss or bone pain, a bleeding disorder, or a history of cancer [RACGP] [healthdirect] [Mayo].

About PSA

PSA (prostate-specific antigen) is a blood test that can be raised by prostate cancer but also by an enlarged prostate, infection or recent procedures. A normal result doesn't rule out cancer, and an abnormal one usually needs repeating [StatPearls].

Sources

  1. Haematospermia: management NICE Clinical Knowledge Summaries
  2. Evaluation and Treatment of Hematospermia American Family Physician, 2009;80(12):1421-1427
  3. Haematospermia Australian Family Physician (RACGP), Dec 2015
  4. Hematospermia: etiology, diagnosis, and treatment Review article, PubMed Central (PMC5904639)
  5. Hematospermia MSD Manual Professional Edition
  6. Blood in semen (haematospermia) healthdirect Australia
  7. Blood in semen: when to see a doctor Mayo Clinic
  8. Prostate Cancer Screening StatPearls, NCBI Bookshelf (NBK556081)

We link to primary medical sources so you can check our work. See the editorial policy and the full reference list.