A post-vasectomy semen analysis is an evaluation of an ejaculated specimen performed after the vasectomy. The absence of sperm on two or more centrifuged specimens, given by the patient a week or more apart, is usually required to confirm the clearance of sperm from the ejaculate. A Post-Vasectomy Semen Analysis consists of:
- Volume – a measure of the amount of seminal fluid.
- Concentration – the number of sperm in a specified volume of ejaculate.
- Total Count – the total number of sperm in the specimen.
- Motility – how the sperm move. The test includes both the percent of motile sperm as well as a measure of how fast, and in what direction, they move.
- Viability – If sperm are present, but not moving, this test identifies whether they are alive.
- Fructose test – when no sperm are seen this test confirms that the specimen contained fluid from the seminal vesicle.
Please review the Semen Specimen Requirements.