DHEA-S is the storage form of DHEA, a hormone made mostly by your adrenal glands that serves as a building block for testosterone and estrogen. Levels peak in your twenties and decline steadily with age, so results are read against age as much as against sex.
| Group | Typical range | Units |
|---|---|---|
| Men, 20s to 30s | 120 to 640 | mcg/dL |
| Men, 40s and older | 70 to 530 | mcg/dL |
| Women, 20s to 30s | 45 to 380 | mcg/dL |
| Women, 40s and older | 32 to 240 | mcg/dL |
Ranges vary between labs and shift considerably with age, so compare to the range on your own lab report.
What DHEA-S measures
DHEA-S (dehydroepiandrosterone sulfate) is produced almost entirely by the adrenal glands, which makes it a clean marker of adrenal androgen output. Your body converts it into DHEA and then into testosterone and estrogen in peripheral tissues, so it acts as a reservoir the body draws on rather than a hormone that does much on its own. Because DHEA-S circulates at high concentrations and stays relatively stable through the day, it is measured instead of DHEA, which fluctuates hour to hour.
What high or low levels mean
Low DHEA-S is most often a normal consequence of aging, since production falls roughly 2 to 3 percent per year after the mid-twenties. Persistently low levels can also reflect reduced adrenal function or the effects of long-term corticosteroid use. High DHEA-S points toward increased adrenal androgen production. In women it is one of the markers used when evaluating symptoms like irregular cycles, acne, or unwanted hair growth, and it can be elevated in polycystic ovary syndrome. Markedly high levels warrant follow-up to rule out an adrenal cause.
DHEA-S FAQ
Why is DHEA-S measured instead of DHEA?
DHEA rises and falls throughout the day, so a single reading is hard to interpret. DHEA-S is far more stable and circulates at much higher concentrations, which makes one blood draw a reliable snapshot.
Does a low DHEA-S mean I should take a DHEA supplement?
Not on its own. A low result is common with age and does not automatically indicate a deficiency that needs treating. DHEA supplements raise downstream testosterone and estrogen and are not appropriate for everyone, so that decision belongs with a clinician.
Does DHEA-S need to be tested fasting?
No. DHEA-S is stable enough that fasting is not required, though testing in the morning alongside other hormones keeps results consistent between draws. Read alongside Total testosterone, Sex hormone binding globulin, and Estradiol for a fuller picture of your hormone profile.
References
- MedlinePlus Medical Encyclopedia, DHEA-sulfate test.
- Cleveland Clinic, DHEA-S Test.
