The most important part of your follow up is the Sperm count.
After a vasectomy, there are still sperm in the vas and seminal vesicles. Experience shows that it usually takes between 12 and 20 ejaculations until all sperm have been cleared from these reservoirs. It is only then that you are sterile and no longer need to take other contraceptive precautions.
We find that by eight – 10 weeks after the operation, most men (about 75%) will show no sperm in the ejaculate.
You will return to the rooms for your first appointment four weeks following surgery. As this appointment, you will be given a request form and jar for your sperm analysis.
Our requirements are that you have a single sperm count 10 weeks following surgery. This is done by ejaculating into a specimen jar and taking the fresh specimen to the Pathology lab in working hours. It will be examined microscopically and it is only regarded as clear if there are no sperm seen. We are very strict about this. If there is any sperm seen at all, we ask that you do not consider yourself sterile and you will have another test in another eight weeks. We will notify you in writing if the test is clear. If the test remains positive (that is, sperm can be seen), you will also be notified and in the letter will be another request form to repeat the test in 8 weeks.
Rarely, we strike a case where, even though a man is ejaculating regularly, his sperm count many months later still shows small numbers of non-motile sperm. The reason for this is not well understood and it needs careful discussion between the patient and his Urologist.