Semen analysis, also known as a sperm count test, analyzes the health and viability of a man’s sperm. Semen is the fluid containing sperm (plus other sugar and protein substances) that’s released during ejaculation.
Types of Body Fluid Testing. Laboratory testing can be performed on many types of fluids from the body other than blood. Often, these fluids are tested instead of blood because they can give more direct answers to what may be going on in a particular part of the body.