Hormones
LH rises sharply mid-cycle to trigger release of the egg, and in men it stimulates testosterone production. Ovulation predictor kits detect the LH surge in urine. A persistently raised LH relative to FSH is sometimes seen in PCOS, though it is not required for the diagnosis.
Also known as: luteinising hormone, luteinizing 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.