Male fertility
Teratozoospermia means the percentage of normally shaped sperm falls below the reference value under strict criteria. It is common and often occurs alongside other abnormalities. It does not mean a baby would be abnormally formed; ICSI can be used to select an individual sperm where fertilisation is a concern.
Also known as: abnormal sperm shape, poor morphology
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.