Normal Reference Ranges
Adult
Male: < 0.2 | Female: Varies (High in luteal phase) ng/mL
Pediatric
N/A ng/mL
Clinical Significance
Prepares endometrium for implantation. Used to confirm ovulation (measured on day 21 of a 28-day cycle).
Causes of High
- Pregnancy
- Congenital Adrenal Hyperplasia (CAH - certain types)
- Ovarian cysts
Causes of Low
- Anovulation
- Luteal phase defect
- Threatened miscarriage