: Sperm Nonprogressive Motility by Microscopy

: What This Test Measures

: During a semen analysis, a laboratory specialist examines a sample under a microscope and classifies sperm by how they move. Sperm are typically grouped as progressively motile (swimming forward), nonprogressively motile (moving but not forward), and immotile (not moving). This test focuses on the nonprogressive category.

: How the Sample Is Collected

: A semen sample is usually collected privately at the clinic or at home following instructions from the laboratory. Proper collection and prompt delivery to the lab matter because sperm movement can change over time after collection. Your provider will give you specific instructions to follow.

: What the Results Mean

: The nonprogressive motility result is interpreted together with total sperm count, concentration, progressive motility, and morphology (shape). A single abnormal value does not by itself diagnose infertility. Providers look at the overall pattern and may repeat the test, since results can vary between samples.

: Limits of the Test

: Motility assessment depends on careful sample handling and is somewhat subjective, so results can vary between observers and laboratories. This test alone does not identify the cause of abnormal motility. Additional testing and a full clinical evaluation may be needed.