Normal Reference Ranges
Adult
Male: 300-1000 | Female: 15-70 ng/dL
Pediatric
Varies significantly by age/Tanner stage ng/dL
Clinical Significance
Major male sex hormone. Must be measured in the morning when levels are highest.
Causes of High
- PCOS (Females)
- Adrenal tumors
- Exogenous androgen use
- Testicular tumors
Causes of Low
- Hypogonadism (Primary or Secondary)
- Klinefelter syndrome
- Severe obesity
- Aging