Post-Vasectomy Testing
What is post-vasectomy testing?
After your vasectomy, you’ll need a follow-up semen analysis to confirm the procedure worked and that there are no sperm left in your semen. This is the only way to confirm that you’re no longer fertile and that it’s safe to stop using birth control.
What does the test involve?
You'll provide a semen sample, usually 8 to 12 weeks after your vasectomy.
The sample is examined under 4K video microscopes to check for sperm.
It may take 15–20 ejaculations to completely clear sperm from your system.
Important: Keep using another form of birth control until you receive lab results.
Here's What We Test for Post-Vasectomy
0 Motile Sperm
Ensures complete absence of motile sperm, confirming the success of a vasectomy and eliminating the risk of pregnancy.
Less than 0.1 Million Immotile Sperm
Recognized as an acceptable result according to the AUA, as non-motile sperm lack the ability to fertilize an egg.
Top 3 Reasons Why Post-Vasectomy Testing Matters
It confirms the vasectomy worked: A vasectomy is a highly effective procedure — but not until all sperm are cleared out. This test confirms your body is sperm-free.
It prevents unplanned pregnancies: If you skip the test or stop using birth control too early, there’s still a chance of pregnancy.
It protects your peace of mind: A quick test gives long-term confidence that you’ve successfully taken control of your reproductive future.
What do the results mean?
When should I take the test?
Most men take the test 8–12 weeks after surgery.
Your doctor will tell you the right time based on your procedure and how many times you've ejaculated since.
Questions to Ask Your Doctor
When should I take my semen test?
What if sperm are still found?
Do I need more than one test?
When is it safe to stop using birth control?
A vasectomy is over 99% effective but only after testing confirms it. One quick test gives you clarity, confidence, and peace of mind.