Sample Requirements:
SST or red top, fasting not required
Purpose:
Evaluates fertility, menstrual irregularities, and gonadal function.
High Levels:
May indicate menopause, gonadal failure, or PCOS.
Low Levels:
Could be due to pituitary suppression or hypothalamic dysfunction.
Reference Range:
Men: 1.5–12.4 mIU/mL; Women: varies with cycle phase