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Post vasectomy semen checks

There is an information booklet for patients: Vasectomy Semen Analysis, which can be found in the related media  section of our website.

The first semen specimen should be passed at least 16 weeks after the vasectomy operation and after producing at least 24 ejaculates. The second semen specimen should be produced at least two weeks after the first specimen.

Post-vasectomy checks are necessary until two consecutive specimens are free from sperm. These instructions are based on the British Andrology Society Guidelines 2002.

As a fresh sample is essential for this test it must be brought to the laboratory within four hours of it being passed at home.

Sexual abstinence should be three to four days prior to providing the specimen.

The sample must be obtained by masturbation (manual stimulation) and should be collected directly into the specimen container provided. A condom and/or artificial lubrication must not be used for semen collection, as it will kill the sperm.

The complete specimen is needed for this examination, so if any of the specimen is spilt, the laboratory must be informed and a repeat specimen may be required. 

The specimen container must be labelled with the patient's full name, date of birth and the date and time the specimen was passed.

The specimen should be brought directly to Andrology by the patient within 4 hours of it being passed.