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Fertility Glossary

Repeat beta hCG

A second hCG blood test, usually 48 hours later, to see how the level is changing.

Pregnancy after treatment

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

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.

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