Pregnancy
Amniocentesis takes a small sample of amniotic fluid with a fine needle from about 15 weeks, giving a definitive chromosomal or genetic diagnosis. It carries a small risk of miscarriage, so it is offered after a high-chance screening result or where there is a known genetic risk.
Also known as: amnio
Sources
- Royal Australian and New Zealand College of Obstetricians and Gynaecologists (ranzcog.edu.au)
Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.