Beta-hCG (human chorionic gonadotropin)

Human chorionic gonadotropin (hCG) is produced by early pregnancy tissue shortly after implantation. A blood test for beta-hCG is the most sensitive way to confirm pregnancy, usually done around 10–14 days after embryo transfer or ovulation/insemination, following the clinic's protocol. In early pregnancy, especially after IVF, the level is often rechecked every 48–72 hours (serial beta-hCG) because a healthy early pregnancy usually shows a characteristic rise; a slower rise or fall can raise concern for a non-viable or ectopic pregnancy and needs further assessment, not a diagnosis from a single number. hCG is also used, as a trigger injection, to bring about final egg maturation before egg retrieval or ovulation, which is a separate use from pregnancy testing.

Also known as: hCG, beta hCG, serial beta hCG, pregnancy hormone test

Last reviewed: 9 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.