Male fertility
Progressive motility counts only sperm moving actively forwards, which is the movement most relevant to natural conception and IUI. Sperm that twitch on the spot are motile but not progressive. This figure is one of the most important on a semen report.
Also known as: progressively motile sperm, forward movement
Related South Africa guides
Sources
- WHO laboratory manual for the examination and processing of human semen
Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.