Sperm Count

Sperm count is the number of sperm in a semen sample. Sperm count is measured during a semen analysis, which is typically performed on men undergoing fertility testing. A low sperm count does not mean it is impossible to achieve pregnancy, but it may make the process more difficult.

A typical ejaculation contains as many as 15 million to 200 million sperm per mL of semen. Sperm concentrations below 15 million per mL or counts below 39 million sperm per ejaculate are considered subnormal according to the World Health Organization (WHO) and may interfere with conception.