Men's Health
Post-Vasectomy Sperm Test
Private semen analysis in Central London to check whether sperm are still present after your vasectomy, so you know when you can safely stop using contraception.
- Results: 24-42 hours
- Sample Type: Semen
- Same-day appointments
- Clinic location: 73 Baker Street, W1U 6RD
What's included
A fast, discreet and accurate test that confirms whether your vasectomy has been successful.
- Full semen analysis
- Azoospermia confirmation
- Easy-to-read report
- Optional teleconsultation
Suitable for Men who recently had a vasectomy, need clearance before stopping contraception, were advised follow-up testing by their surgeon, or want faster private results instead of waiting for the NHS.
What the Test Checks
A post-vasectomy sperm test checks whether sperm are still present after your vasectomy. This confirms whether the procedure has been successful and when you can safely stop using contraception. At Marylebone Diagnostic Centre on Baker Street, we provide a fast, discreet and accurate test with results in 24-42 hours.
- Whether sperm are present
- Whether sperm are moving
- The number of sperm per millilitre
- Whether you are clear (azoospermic)
Most men need 8-16 weeks and 20+ ejaculations before the sample becomes clear.
Who Needs This Test
Book this test if:
- You recently had a vasectomy
- You need clearance before stopping contraception
- Your surgeon advised follow-up testing
- You want faster, private results instead of waiting for the NHS
Before you test
- Avoid ejaculation for 2-5 days before giving the sample, for the most accurate result
- We recommend producing the sample on-site. If you bring one from home, it must reach us within 30 minutes and be kept warm
Follow your surgeon's advice on when to take the first test.
Popular Add-ons
Why Choose Marylebone Diagnostic Centre?
- Results in 24-42 hours
- Same-day appointments
- Private suites for comfort
- 5 minutes from Baker Street Tube
- CQC-accredited and aligned with the Marylebone High Standard
- QCMD quality assurance
- On-site medical review, if needed
Visit Our Clinic
- Address: 73 Baker Street, London W1U 6RD
- Phone: +44 7495 970109
- Hours: Monday-Saturday, 8:00-16:00
Frequently asked questions
How soon can I do the test after my vasectomy?
Most men take the first test after 8-16 weeks or after at least 20 ejaculations. Follow your surgeon's advice.
Why is the test needed?
It confirms whether sperm have cleared from your ejaculate so you know when it is safe to stop using contraception.
How is the test done?
You provide a semen sample on-site in a private room. The sample is analysed by our laboratory team.
Is the test painful?
No. It only involves giving a semen sample. There is no physical examination.
What does the test look for?
It checks if sperm are present, whether they are moving, and the concentration. It confirms if you are 'clear'.
What if sperm are still present?
This is common early on. You may need to repeat the test until you reach azoospermia or non-motile sperm.
How many tests do I usually need?
Many men receive clearance after one test. Others need a second test if sperm are still present.
How fast are the results?
You will receive your report within 24-42 hours.
Do I need to prepare before the test?
Yes. Avoid ejaculation for 2-5 days before giving the sample for the most accurate result.
Can I bring a sample from home?
For accuracy, we recommend producing the sample on-site. If you need to bring it from home, it must reach us within 30 minutes and be kept warm.
Will my GP be informed?
No, unless you request it. Your results are private and confidential.
What happens if the test shows zero sperm?
You are considered 'clear', and your clinician will confirm that you can stop using contraception.
