: Sperm Motility, Non-Formaldehyde Rapid Stain, Semen

What This Test Measures

Sperm motility refers to the percentage of sperm in a sample that are actively moving and how well they move. Movement is essential because sperm must travel through the reproductive tract to reach and fertilize an egg. This test uses a rapid staining method to help laboratory staff clearly see and classify sperm movement patterns under a microscope.

How the Sample Is Collected

A semen sample is collected, typically after a recommended period of abstinence, usually into a sterile container provided by the laboratory. The sample is then prepared and stained so that sperm can be examined for movement characteristics. Your provider will give you specific instructions on collection timing and handling.

What the Results Mean

Results describe the proportion of motile sperm and their movement quality, often categorized as progressive (moving forward), non-progressive (moving in place), or immotile (not moving). These findings are interpreted alongside other semen analysis parameters such as sperm count, shape (morphology), and volume. No single value defines fertility on its own.

Limitations and Considerations

Motility can be affected by the time between collection and analysis, temperature, and recent illness or lifestyle factors. Because results can vary between samples, a single test may not reflect overall fertility, and repeat testing or additional evaluation may be recommended by your healthcare provider.