Semen is a gel like thick fluid which is produced in testes and ejaculated out through urethra. Semen fluid contains sperm cells and other various components like protein, vitamins, minerals, etc. Semen analysis is a laboratory test that is done to examine and evaluate features of semen fluid and sperm cells.
Your doctor may request semen analysis test if you and your partner have problem to get pregnant. Semen analysis test evaluates your sperm cells and semen fluid to diagnose male type infertility. Also semen analysis may be done to check sperm cell presence after vasectomy operation which is a kind of birth control method.