The glossary provides brief definitions and explanations of terms used on the website or procedure. The terms describe terminology and the medical information that they refer to. If you cannot find the term you are looking for, please contact us so that we can answer your questions.
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Anti Sperm Antibodies
(ASA). These are proteins that are created by the body to counter material seen as foreign. Our own sperms are not usually exposed to the blood stream and men do not normally have ASA. However, after vasectomy over 80% of men have ASA. Although commonly present in reversal patients they very rarely spoil post reversal fertility (a common myth in the UK).