Semen Analysis for Male Infertility
A semen analysis evaluates certain characteristics of a male's semen and the sperm contained in the semen. It may be performed to determine if:
- a man has a reproductive problem that is causing infertility
- a vasectomy has been successful
- the reversal of a vasectomy has been successful
Tests that may be done during a semen analysis include:
Measures how much semen is present in one ejaculation
- Sperm count
A count of the number of sperm present per milliliter (mL) of semen in one ejaculation
- Sperm morphology
Measures the percentage of sperm that have a normal shape
- Sperm motility
Measures the percentage of sperm that can move forward normally. The number of sperm that show normal forward movement in a certain amount of semen can also be measured (motile density).
- Liquefaction time
Liquefaction time measures the time it takes for the semen to liquefy. (Semen is a thick gel at the time of ejaculation and normally becomes liquid within 20 minutes after ejaculation).
Measures the acidity (low pH) or alkalinity (high pH) of the semen.
- White blood cell count
Checks for white blood cells which are not normally present in semen
- Fructose level
Measures the amount of a sugar called fructose in the semen. The fructose provides energy for the sperm.
Further information on semen analysis
Semen Analysis (Medline Plus )