Use of large-volume, fixed-depth, disposable slides for post-vasectomy semen analysis.

Vasectomy is the surgical procedure used for male contraception. Traditionally, operative success has been established by the issue of a laboratory report stating the achievement of azoospermia. The purpose of this study is to establish if this is an achievable or realistic status and if a change to the current best practice would provide an acceptable and cost-effective alternative. In principle, human fecundity is complex and measured in probabilities, which is inconsistent with the implied absolute requirement to establish the complete absence of spermatozoa.