The most useful test of male infertility is semen analysis. A semen analysis measures the amount of semen a man produces and determines the number and quality of sperm in a semen sample.
Tests undertaken during a semen analysis include:
- Volume: a measure of how much semen is present in one ejaculation.
- Sperm count: a count of the number of sperm present per millilitre of semen in one ejaculation.
- Sperm morphology: a measure of the percentage of sperm that have a normal shape.
- Sperm motility: a measure of the percentage of sperm that can move forward normally.