Results of Vasectomy

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After a vasectomy has been performed some sperm will survive in the upper part of the vas deferens tubes. Until your semen has been confirmed free of sperm there is still a risk of pregnancy and you should continue to use another form of contraception.

At least 8 weeks after the procedure you will need to produce 2 semen tests, 3-6 weeks apart, which will be checked for sperm. These tests will also help to identify the rare cases in which the tubes naturally rejoin themselves. Once the tests have been confirmed free of sperm the vasectomy has been successful and further contraception can be stopped.

After a successful vasectomy your testicles will continue to produce male hormone (testosterone) just as before the procedure. Your sex drive, sensation, ability to have an erection and the amount of semen you ejaculate wonâ€™t be affected. The only difference is that there will be no sperm in your semen. Your body still produces sperm, but they are reabsorbed harmlessly.

There are no known long-term risks from a vasectomy. Concerns about an increased risk of prostate cancer have not been proved.

Reversal of vasectomy is possible, but the procedure is frequently unsuccessful. The success of the reversal will depend upon how and when your vasectomy was performed, but the failure rate is about 50%. The procedure is also not easily available under the NHS.

You should remember that although a successful vasectomy is a completely effective method of contraception, it does not protect you against STIs. You should continue to protect yourself with condoms if you are at risk.