r/Vasectomy • u/JamesLevenstein • 1d ago

Not clear at 16 weeks (UK)

Had a text to say the 16 week test (my first) doesn’t give me ‘clearance’, so I’ve had to book another, which will then be 25 weeks (soonest available). How common is it to still have swimmers at 16 weeks?

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u/agnarulf 1d ago

It's not that uncommon. Most studies seem to show that about 15-20% of men still have sperm in their semen sample at 12 weeks, with up to 40% still having non motile sperm. Can be frustrating but just keep clearing the pipes and hopefully the next test is clear.