What this test measures
Dehydroepiandrosterone sulphate (DHEA-S) is the sulphate ester of DHEA and the most abundant circulating steroid in the body. It is produced almost entirely by the adrenal cortex (the zona reticularis), with negligible contribution from the gonads — which makes DHEA-S the cleanest biochemical marker of adrenal androgen production.
DHEA-S has a long half-life and stable serum level (no significant diurnal or menstrual variation), so a single random sample is sufficient. Levels are high in young adults and decline steadily with age — a 70-year-old has only 10–20% of a 25-year-old's DHEA-S.
Why it matters
In the workup of female hyperandrogenism (hirsutism, acne, hair loss, virilisation), DHEA-S is paired with total/free testosterone, A4, 17-OHP and SHBG. Mild rises (up to 2× normal) are common in PCOS. Very high DHEA-S (> 5× normal, or > 700 µg/dL) raises strong suspicion of an androgen-producing adrenal tumour and warrants imaging.
DHEA-S is also part of the workup for non-classic CAH (alongside 17-OHP), premature adrenarche in children, and as a marker of overall adrenal function in chronic illness. Low DHEA-S supports a diagnosis of adrenal insufficiency or panhypopituitarism.
How to prepare
No fasting required. Sample can be drawn at any time of day. Stop biotin for 48–72 hours. Continue other medications. Mention any DHEA supplements — DHEA is sold over the counter and a recent dose raises DHEA-S sharply.
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| DHEA-Sulphate (µg/dL)[1][2] | Female 20–29: 65 – 380 · 30–39: 45 – 270 · 40–49: 32 – 240 · 50–59: 26 – 200 · 60–69: 13 – 130 · Male 20–29: 280 – 640 · declining with age | Low DHEA-S supports adrenal insufficiency (Addison's) or hypopituitarism. May be reduced with long-term steroid therapy or in critical illness. | Mild raises (up to 2× normal) are common in PCOS. Moderate raises with raised 17-OHP suggest non-classic CAH. Very high DHEA-S (> 5× normal or > 700 µg/dL) in a woman with virilising features = androgen-secreting adrenal tumour until proven otherwise — needs adrenal CT. |
DHEA-S in hyperandrogenism workup
| Picture | DHEA-S | Testosterone | 17-OHP | Likely cause |
|---|---|---|---|---|
| Mild hirsutism / PCOS | Normal or mildly raised | Normal/mildly raised | Normal | Polycystic ovary syndrome |
| Hirsutism + non-classic CAH | Raised | Raised | Raised | 21-hydroxylase deficiency |
| Rapid virilisation | Very high (> 700 µg/dL) | Raised | Variable | Adrenal androgen tumour — image |
| Rapid virilisation | Normal | Very high | Normal | Ovarian androgen tumour — pelvic imaging |
| Fatigue / hypotension | Low | Low | Normal | Adrenal insufficiency / hypopituitarism |
Frequently asked questions
Why is DHEA-S more useful than DHEA for testing?
DHEA itself has a short half-life and fluctuates rapidly. DHEA-S has a much longer half-life and a stable serum level, so a single sample is reliable.
My DHEA-S is high — does that mean I have a tumour?
Very high values (more than 5 times the upper limit, or above 700 µg/dL) in someone with rapidly progressive hirsutism, voice change or clitoromegaly raise concern for an adrenal androgen-producing tumour and need imaging. Mild rises are far more common and usually fit with PCOS or non-classic CAH.
Should I take DHEA supplements to "feel younger"?
Endocrine Society does not recommend over-the-counter DHEA supplementation for healthy adults — there is no consistent evidence of benefit, and high-dose DHEA can suppress your natural cortisol axis and cause androgenic side effects (acne, hair changes, voice change).
My DHEA-S is low — is that good?
Low DHEA-S in itself is not a clinical problem in most older adults — levels naturally fall with age. A very low DHEA-S in a younger person can support a diagnosis of adrenal insufficiency or hypopituitarism, but is not a stand-alone diagnostic test.
Does the menstrual cycle affect DHEA-S?
No — DHEA-S is essentially flat across the menstrual cycle. You can draw it on any day.
Is DHEA-S used in male hormone testing?
Mainly in men with suspected adrenal insufficiency, panhypopituitarism, or workup of an adrenal mass. Routine male "testosterone optimisation" panels often include DHEA-S, but its day-to-day relevance in healthy men is limited.
How is DHEA-S different from testosterone?
DHEA-S is almost entirely adrenal — a high DHEA-S localises the problem to the adrenal gland. Testosterone in women is mostly ovarian — a very high testosterone with a normal DHEA-S localises to the ovary. Measuring both lets the doctor decide which gland needs imaging.
Related Hormones / Endocrine tests
Tests commonly ordered alongside DHEA - SULPHATE (DHEAS), or that help interpret an unexpected result.
Sources & references
- Endocrine Society — Hirsutism in Premenopausal Women · accessed 2026-05-30T00:00:00.000Z
- NIH MedlinePlus — DHEA Sulfate Test · accessed 2026-05-30T00:00:00.000Z
- NCBI StatPearls — DHEA-S · accessed 2026-05-30T00:00:00.000Z
- Mayo Clinic Laboratories — DHEA-S · accessed 2026-05-30T00:00:00.000Z
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