Sperm Motility Analysis (Pre-Wash)

Why This Test Is Done

A sperm motility analysis may be recommended if you’re experiencing difficulty getting pregnant, unexplained infertility, or recurrent pregnancy loss. This test helps doctors understand how well sperm can move, which is crucial for fertilization. The pre-wash sample is used to evaluate sperm motility in its natural state, before any laboratory processing that might alter its function.

What to Expect During the Test

You’ll provide a semen sample (usually collected by masturbation into a sterile container) after sexual stimulation. The sample is then analyzed under a microscope to measure sperm movement characteristics. The pre-wash sample is tested immediately to assess natural motility before any washing or dilution steps.

Sample Collection and Preparation

The test requires a fresh semen sample collected in a sterile container. The sample is not washed or processed before analysis to preserve natural sperm motility. This helps provide an accurate assessment of sperm function as it exists in the body.

Interpreting Results

Results are typically reported as a percentage of motile sperm cells (e.g., 40% motile). While specific reference ranges vary by lab, a lower percentage may indicate reduced fertility potential. Your doctor will interpret results in the context of your overall reproductive health.