A repeat beta hCG compares the level with the first test, usually about 48 hours apart. In an early, developing pregnancy the level typically rises substantially over that period, while a slow rise, plateau or fall may indicate an early loss or a pregnancy in the wrong place and needs clinical follow-up. Numbers vary widely between healthy pregnancies, so the pattern matters more than the exact figure.
Also known as: serial beta, doubling hCG, repeat blood test
Related South Africa guides
Sources
- ESHRE guidelines and patient information
Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only β always follow the advice of your own clinic, doctor or pharmacist.
