The most important test for assessing male fertility is the semen analysis.For a semen analysis, a fresh semen sample, not more than half an hour old is needed, after sexual abstinence for at least 3 to 4 days. The man masturbates into a clean, wide mouthed bottle which is then delivered to the laboratory.
Where the sperm is assessed for the following.
(i) Sperm count
(ii) Sperm motility
(iii) Sperm shape
(iv) Sperm clumping or agglutination