Sperm Motility Test (Quantitative)

Why Motility Matters for Fertility

Sperm motility is a key factor in determining whether sperm can swim effectively to reach and fertilize an egg. Healthy sperm must move quickly and in a straight line to navigate the female reproductive tract. A motility test helps doctors understand if sperm movement is normal or if there may be underlying issues affecting fertility.

How the Test Works

A sample of semen is collected and examined under a microscope. A specialized grading system evaluates the percentage of sperm that are actively moving (motile) versus those that are not. This is often done using a technique called computer-assisted sperm analysis (CASA), which provides a more precise count and movement pattern assessment.

What to Expect Before the Test

You may be asked to abstain from ejaculation for 2–5 days before the test to ensure a sample with typical sperm concentration and motility. Avoid alcohol, caffeine, or strenuous activity on the day of testing. Your provider may also recommend specific lifestyle adjustments if needed.

Possible Results and Next Steps

Results are typically reported as a percentage of motile sperm (e.g., 40% motile). Low motility alone may not always indicate infertility, but it often requires further evaluation, such as additional semen analysis, genetic testing, or medical evaluation of underlying conditions (e.g., hormonal imbalances, infections).