Normal DHEA-S Levels for a 46-Year-Old Female
For a 46-year-old woman, normal serum DHEA-S levels range from approximately 0.3 to 2.8 μg/mL (or 300-2800 ng/mL), with an average around 1.78 μg/mL.
Age-Specific Reference Values
The most relevant data for your question comes from a study establishing normal values in women across the lifespan 1. DHEA-S levels show significant age-related decline:
- Peak levels occur around age 24-30 years in women
- After age 30, levels decline rapidly until approximately age 50-60
- After age 50-60, the decline becomes more moderate
For a 46-year-old woman specifically, she would be in the late premenopausal period where DHEA-S levels are declining but have not yet reached the lower postmenopausal plateau 1.
Clinical Context for Interpretation
Normal Postmenopausal Reference
- Postmenopausal women typically have DHEA-S levels around 220 pg/mL for E1-S (estrone sulfate, a related marker) 2
- The baseline study measuring normal women found an average of 1.78 ± 0.1 μg/mL with a range of 0.3-2.8 μg/mL 3
Important Considerations
Body mass does not affect DHEA-S levels - Unlike many hormones, DHEA-S levels do not correlate with body weight, surface area, or ponderal index, and are not elevated in obese women without androgen excess 3, 4.
Sex differences exist - Women have approximately half the DHEA-S levels of men at comparable ages, though unconjugated DHEA shows different patterns 1.
Clinical Utility Notes
When evaluating DHEA-S in a 46-year-old woman:
- For adrenal androgen assessment: DHEA-S is superior to urinary 17-ketosteroids and should be the preferred test 3
- For HPA axis integrity: Age- and gender-adjusted DHEA-S levels predict intact hypothalamic-pituitary-adrenal function with 87.1% sensitivity and 86.7% specificity 5
- DHEA-S ratio calculation: Measured DHEA-S divided by the lower limit of the age-specific reference range; a ratio >1.78 has 100% sensitivity for intact HPA function 5
DHEA and DHEA-S are not interchangeable - They show different age and sex-related patterns, so DHEA measurements cannot substitute for DHEA-S and vice versa 1.