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DHEA-S Blood Test: Normal Levels by Age, High & Low

The DHEA-S blood test measures your main adrenal androgen. Learn normal levels by age and sex, what high DHEA-S (PCOS, adrenal) or low DHEA-S means, and why the anti-aging hype falls flat.

Published July 20, 202611 min readWritten by the Blood Analysis Team · Reviewed and verified by Julien Priour

DHEA-S (dehydroepiandrosterone sulfate, sometimes written DHEA sulfate) is the main androgen made by your adrenal glands. It's a simple, stable marker of adrenal androgen activity: unlike "free" DHEA, which swings hour to hour, DHEA-S stays remarkably steady through the day, which makes it a reliable test. This guide covers normal DHEA-S levels by age and sex, what a high or low result means, the causes worth chasing (PCOS, adrenal problems), and its main job — sorting out excess hair growth, acne, or irregular periods. DHEA-S is rarely read alone: it belongs to a broader hormone panel and is interpreted alongside testosterone and cortisol.

Key takeaways

  • DHEA-S is the main adrenal androgen, secreted by the adrenal cortex; its sulfated form is stable through the day, making it the best reflection of adrenal androgen activity.12
  • Levels depend heavily on age and sex: they peak around 20–30 years and then decline steadily with age ("adrenopause") — always read against an age- and sex-specific range.13
  • High DHEA-S points to an adrenal source of androgen excess: PCOS, congenital adrenal hyperplasia, Cushing syndrome, and — rarely but not to be missed — an adrenal tumor (a sharp, rapid rise).45
  • Low DHEA-S most often reflects age, steroid (glucocorticoid) therapy, adrenal insufficiency, or pituitary disease — it carries far less diagnostic weight than a high value.6
  • Its main use is the work-up of hyperandrogenism (hirsutism, acne, irregular periods) to tell whether the excess androgen comes mainly from the adrenal glands or the ovaries.76
  • Anti-aging DHEA supplements have no proven benefit and are not recommended outside a specific medical indication.89

What is DHEA-S?

DHEA-S (dehydroepiandrosterone sulfate) is a steroid hormone made more than 95% by the outer layer of the adrenal glands, the adrenal cortex, under the drive of the pituitary hormone ACTH. It is a "weak" androgen that acts mostly as a precursor — a raw material the body can convert into more potent hormones, testosterone and estradiol, in various tissues.21

DHEA circulates in two forms. Free DHEA is secreted in pulses and tracks cortisol, so it fluctuates a lot across the day. Its sulfated form, DHEA-S, circulates at 100–1,000 times higher concentrations and stays steady hour to hour. That very stability — no marked day-night swing — is what makes DHEA-S the reference marker for adrenal androgen activity, more reliable than a free-DHEA measurement.12

DHEA, DHEA-S, and testosterone are not the same. Testosterone is the "strong" androgen (made mainly by the ovaries/testes, partly from converting adrenal androgens); DHEA-S is the marker that points specifically to the adrenal glands. That distinction is exactly what makes DHEA-S useful.

Why the test is done

DHEA-S is not a routine test. Your clinician orders it in targeted situations, almost always to work up an excess of androgens.76

  • To localize the source of hyperandrogenism. Faced with hirsutism (male-pattern excess hair), stubborn acne, hair loss, irregular periods, or signs of virilization, DHEA-S helps tell whether the androgen excess is more adrenal (high DHEA-S) or ovarian (testosterone in the lead). It is measured alongside testosterone.46
  • To evaluate polycystic ovary syndrome (PCOS). Roughly 20–30% of women with PCOS also have an adrenal androgen excess flagged by DHEA-S.4
  • To look for a rarer adrenal cause. A very high DHEA-S points toward congenital adrenal hyperplasia, Cushing syndrome, or an adrenal tumor.25
  • In children, to work up precocious puberty or premature pubic hair (adrenarche).1

Outside these settings, DHEA-S adds little. It is not a "vitality," "energy," or general aging test to track in everyone.

Do you need to fast?

No — the DHEA-S blood test does not require fasting. Because it is so stable, it also does not need a specific time of day, unlike cortisol (which must be drawn in the morning). You can eat normally beforehand. If your order includes other hormone tests, follow your clinician's overall instructions (see Do you need to fast before a blood test?). In menstruating women, the clinician may time other hormones to a specific cycle day, but DHEA-S itself varies little across the cycle.3

Normal ranges

DHEA-S is reported in µg/dL (conventional U.S. unit) or µmol/L (SI unit) — to convert, µg/dL × 0.0271 = µmol/L.10 There is no single normal value: the level depends closely on age and sex, and reference intervals are typically broken out by decade and sex.11 It rises at puberty, peaks around 20–30 years, then falls steadily decade by decade. Below are indicative adult reference values — they vary substantially by lab and assay, so always compare against the range printed on your report.

Age (adult)Women (µg/dL)Men (µg/dL)
20 – 30 yr~65 – 380~110 – 510
30 – 40 yr~45 – 270~100 – 500
40 – 50 yr~30 – 240~90 – 450
50 – 60 yr~25 – 200~65 – 310
60 – 70 yr~15 – 155~40 – 290
> 70 yr~10 – 90~25 – 175

Good to know: these are landmarks, not hard cutoffs. Men run higher than women, and the age-related decline is physiological ("adrenopause"). A low value in an older adult is therefore expected and rarely worrying. Only your clinician can interpret the number in your context.13

Understanding your results

High DHEA-S: causes

A high DHEA-S signals that the adrenal glands are making too much androgen. Causes range from very common to rare:452

  • Polycystic ovary syndrome (PCOS) — the most common cause of hyperandrogenism in younger women; DHEA-S is moderately raised in 20–30% of these patients, on top of testosterone.4
  • Congenital adrenal hyperplasia (often the "non-classic" form, revealed in adulthood): an enzyme defect diverts adrenal hormone production toward androgens.2
  • Cushing syndrome — in ACTH-dependent forms, DHEA-S is often high or in the upper range.5
  • Adrenal tumor (a secreting adenoma or, more rarely, adrenocortical carcinoma): a very marked, rapidly appearing rise, especially with virilization, is a red flag that calls for prompt specialist work-up.56
  • Finally, premature adrenarche in children (early pubic hair) comes with a DHEA-S slightly above age-expected values.1

High DHEA-S = cancer? Almost never. The vast majority of high DHEA-S results come from PCOS or a benign cause, not a tumor. It's the size of the elevation and how fast it appears, together with clinical signs, that raise concern for a tumor — something your clinician judges case by case. A mildly high DHEA-S is not a diagnosis of cancer.5

Low DHEA-S

A low DHEA-S has far less diagnostic value than a high result. It is most often physiological (age lowers it naturally) or drug-related. The main situations:63

  • older age (adrenopause) — by far the most common reason;
  • glucocorticoid therapy (long-term steroids), which suppresses the adrenals;
  • adrenal insufficiency (poorly functioning adrenal glands);
  • pituitary disease (hypopituitarism), which deprives the adrenals of ACTH stimulation.

An isolated low DHEA-S without symptoms usually needs no treatment. It does not "prove" fatigue, accelerated aging, or a deficiency to "fix."

The DHEA-S, testosterone, and cortisol trio

DHEA-S is most meaningful cross-read with other hormones. With testosterone, it helps localize the source of hyperandrogenism: high DHEA-S points to the adrenal glands, high testosterone without high DHEA-S to the ovaries. With cortisol, it helps evaluate the adrenal glands: in an adrenal tumor that mainly makes cortisol, DHEA-S tends to be low, whereas it is high in virilizing tumors. It is this whole picture — not one isolated number — that guides your clinician.65

What affects your DHEA-S

Several things change DHEA-S: age (the number-one factor — a continuous fall), sex (higher in men), puberty (a rise), pregnancy, obesity and insulin resistance, chronic stress, and many medications — glucocorticoids, some hormone treatments, and of course DHEA-containing supplements (which raise the level artificially). Always report your medications and supplements: they change how the result is read.34

Recent research

According to recent PubMed-indexed publications:

  • A refined adrenal marker. Recent work on adrenal steroidogenesis confirms that DHEA-S remains the best stable reflection of adrenal androgen activity, while revealing more complex synthesis routes than once thought (the "backdoor" and 11-oxo-androgen pathways) that sharpen the diagnosis of androgen excess.12 (Witchel SF et al., Curr Opin Pediatr, 2020 — DOI.)
  • DHEA-S, PCOS, and cardiovascular risk. In PCOS, adrenal androgen excess (flagged by DHEA-S) affects 20–30% of patients; paradoxically, a high DHEA-S appears to be protective for cardiovascular risk, as in men — a lead still under debate.4 (Goodarzi MO et al., J Steroid Biochem Mol Biol, 2014 — DOI.)
  • DHEA in fertility care: benefit unproven. Using DHEA to improve IVF outcomes in women with diminished ovarian reserve remains controversial: meta-analyses limited to randomized trials show no clear increase in live-birth rates.89 (Zhang J et al., Front Endocrinol, 2023 — DOI; Conforti A et al., Fertil Steril, 2024 — DOI.)
  • "Anti-aging": no miracle. The age-related fall in DHEA-S fueled the idea of "anti-aging" supplementation, but no solid benefit has been shown outside specific medical indications (for example, adrenal insufficiency): it is not a recommended treatment for the general population.96

These findings concern diagnosis and research; they do not authorize self-medication and do not replace your physician's advice.

Get your DHEA-S interpreted by AI DiagMe

A DHEA-S level is never read alone: its meaning depends on your age, sex, testosterone, cortisol, symptoms, and medications. That cross-reading is what gives the result its real value.

👉 AI DiagMe interprets your lab results — blood, urine, or stool — in plain language, taking your whole profile into account. An informational service that does not provide a diagnosis and complements, never replaces, your physician.

Frequently asked questions

What is a DHEA-S blood test?
It measures dehydroepiandrosterone sulfate, the main androgen made by the adrenal glands. Its sulfated form is stable through the day, which makes it a good marker of adrenal androgen activity. It mostly serves as a precursor the body can turn into testosterone and estradiol.
What is a normal DHEA-S level?
There's no single value: it depends on age and sex. As a ballpark, young adults run roughly 65–380 µg/dL in women and 110–510 µg/dL in men, with a steady decline after age 30–40. Values vary substantially by lab, so read the range on your report.
What does high DHEA-S mean?
Most often PCOS (a common cause in younger women), sometimes congenital adrenal hyperplasia or Cushing syndrome. A very high, rapidly rising value with virilization prompts a search for an adrenal tumor — but that is rare. The cause should be pinned down by your clinician.
What does low DHEA-S mean?
Most often age (a natural decline), steroid therapy, and more rarely adrenal insufficiency or pituitary disease. An isolated low DHEA-S without symptoms is usually not worrying and needs no treatment.
Do you need to fast for a DHEA-S test?
No. DHEA-S needs neither fasting nor a specific draw time, thanks to its stability — an advantage over hormones like cortisol.
DHEA-S and hair growth / acne — what's the link?
An excess of adrenal androgens (high DHEA-S) can drive hirsutism, acne, hair loss, or irregular periods. Measuring DHEA-S alongside testosterone helps show whether the excess is adrenal or ovarian, and so guides management.
Are "anti-aging" DHEA supplements worth it?
No — there is no proven benefit of DHEA supplementation as an "anti-aging" treatment, and it is not recommended outside a medical indication. It also artificially raises the measured DHEA-S. Any use should be decided with a clinician.
Does a high DHEA-S mean cancer?
Almost never. The great majority of high DHEA-S results come from PCOS or a benign cause. Only very marked, rapid elevations raise concern for an adrenal tumor, to be worked up by your clinician.

Bottom line

DHEA-S is the main adrenal androgen, and its stable sulfated form makes it the best reflection of adrenal androgen activity. Keep in mind that it has no single normal value: it is read by age and sex, peaks around 20–30, then falls naturally. A high DHEA-S points to an adrenal source of hyperandrogenism (most often PCOS), rarely a tumor; a low DHEA-S mostly reflects age or medication. It is not a cancer marker, nor an "anti-aging" test to supplement. No value is read alone — it's your whole hormone picture and your context that counts, which is what AI DiagMe provides, alongside your physician.

Sources

Official sources and peer-reviewed publications (PubMed) used for this guide:

Footnotes

  1. Witchel SF, Pinto B, Burghard AC, Oberfield SE. Update on adrenarche. Curr Opin Pediatr, 2020. PubMed · DOI ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  2. Turcu AF, Auchus RJ. Adrenal steroidogenesis and congenital adrenal hyperplasia. Endocrinol Metab Clin North Am, 2015. PubMed · DOI ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  3. Endocrine Society — Adrenal hormones and androgen excess (patient and clinical resources). endocrine.org ↩ ↩2 ↩3 ↩4 ↩5

  4. Goodarzi MO, Carmina E, Azziz R. DHEA, DHEAS and PCOS. J Steroid Biochem Mol Biol, 2014. PubMed · DOI ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  5. Yoldemir T. Postmenopausal hyperandrogenism. Climacteric, 2021. PubMed · DOI ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  6. Kostakis EK, Gkioni LN, Macut D, Mastorakos G. Androgens in Menopausal Women: Not Only Polycystic Ovary Syndrome. Front Horm Res, 2019. PubMed · DOI ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  7. Testing.com — DHEA-Sulfate (DHEA-S) Test. testing.com ↩ ↩2

  8. Zhang J, Jia H, Diao F, Ma X, Liu J, Cui Y. Efficacy of dehydroepiandrosterone priming in women with poor ovarian response undergoing IVF/ICSI: a meta-analysis. Front Endocrinol (Lausanne), 2023. PubMed · DOI ↩ ↩2

  9. Conforti A, Carbone L, Di Girolamo R, et al. Therapeutic management in women with a diminished ovarian reserve: a systematic review and meta-analysis of randomized controlled trials. Fertil Steril, 2024. PubMed · DOI ↩ ↩2 ↩3

  10. MedlinePlus (U.S. National Library of Medicine, NIH) — DHEA Sulfate Test. medlineplus.gov ↩

  11. Mayo Clinic Laboratories — DHEA-S, Serum: Clinical and Interpretive Information. mayocliniclabs.com ↩

Medical disclaimer. This article is provided for informational and educational purposes only; it is not medical advice and does not replace a consultation. Reference ranges vary by laboratory and method: only your physician can interpret your results in your specific context.