Hormones
hCG is produced after implantation and is what pregnancy tests detect. Because it acts like LH, a synthetic form is used as the trigger injection to mature eggs before collection. This is why a home pregnancy test taken too soon after a trigger can show a false positive.
Also known as: human chorionic gonadotropin, pregnancy hormone, beta hCG
Related Australia guides
Sources
- Healthdirect Australia (healthdirect.gov.au)
- 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.