GLOSSARY

Luteinizing Hormone (LH)
LH is a pituitary gonadotropin regulated by pulsatile GnRH and gonadal feedback. It acts through the LH/hCG receptor in appropriate gonadal cells.

Sex-specific functions. In testes, LH supports Leydig-cell testosterone synthesis. In ovaries, it contributes to theca-cell steroidogenesis, ovulation-related events and corpus luteum function.

Patterns change. An LH surge in an appropriate cycle context differs from basal pulsatile secretion. Age, cycle stage, menopause and sex-steroid feedback alter expected concentrations.

Interpretive boundary. One LH measurement may not represent integrated reproductive drive. Assessing gonadal function often requires simultaneous consideration of sex steroids, FSH, symptoms and physiological stage rather than treating LH as an isolated performance marker.