How will I know if my vasectomy has been a success?
After the vasectomy, there will be some sperm left in the upper part of the vas deferens tubes. It can take more than 20 ejaculations to clear these sperm from the tubes, so during this time, there is still a risk of pregnancy.
Until it has been confirmed that your semen is free of sperm, you should continue to use another form of contraception.
At least eight weeks after the procedure you will need to produce a sample of semen which will be tested for sperm. This will also help to identify the rare cases in which the tubes naturally rejoin themselves. Once tests have confirmed your semen is free of sperm, the vasectomy is considered successful and further contraception can be stopped.
A few men continue to have small numbers of sperm in their system, but these sperm do not move (they are known as 'non-motile' sperm). It is not always clear whether this means you could make your partner pregnant. If you are one of these men, your doctor will discuss your options with you.
Is reversal possible?
It is possible to have a vasectomy reversed, however the procedure is not always successful. You have a better chance if it is done soon after the vasectomy.
If a reversal is carried out within 10 years of your vasectomy, the success rate is about 55%. This falls to 25% if your reversal is carried out more than 10 years after your vasectomy.
Even if a surgeon manages to join up the0 vas deferens tubes again, pregnancy may still not be possible. This is why you should be as sure as you can be before going ahead. Your doctor should help you in making your decision.
For more information read Vasectomy - Considerations.
Reversal is rarely available on the NHS and the operation can be expensive if done privately.
When can I ditch the condoms?
Although a successful vasectomy is a completely effective method of contraception, it does not protect you against sexually transmitted infections (STIs). You should continue to protect yourself with condoms if you are at risk of catching an STI.
