A semen analysis, also called a sperm count, measures the quantity and quality of semen and sperm. Semen is the thick, white fluid released from the penis during sexual climax (orgasm). This release is called ejaculation. Semen contains sperm, the cells made in the male reproductive system that include the genetic material needed to make a baby.
You may need a semen analysis if:
You will need to provide a semen sample. For accurate the results, the semen must be examined quickly before the sperm begin to die. For this reason, you will usually provide a sample in a private room at a lab by masturbating and collecting your semen in a sterile container. You may be asked to urinate (pee) and wash your hands and penis before collecting your sample. This will help keep bacteria from your skin out of the sample.