Back to glossary

Fertility Glossary

FSH (follicle-stimulating hormone)

The pituitary hormone that stimulates follicles to grow.

Hormones

FSH drives follicle development in the ovary and sperm production in the testis. A day 2–5 blood test is sometimes used alongside AMH to assess ovarian reserve: a high early-cycle FSH suggests the ovaries need more signal to respond. Levels fluctuate between cycles, so one result is interpreted in context, not alone.

Also known as: follicle stimulating hormone, follicle-stimulating hormone

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.

Explore in-depth guides

Learn more with Antega's fertility guides and articles.