DHEA stands for dehydroepiandrosterone, a steroid hormone that the adrenal glands and, to a lesser extent, the ovaries and testes make. Clinicians usually measure its sulfate form, DHEA-S (dehydroepiandrosterone sulfate), in blood (serum) to assess adrenal function and hormone balance. People also take DHEA as an over-the-counter supplement, which can affect lab results and symptoms.
What DHEA measures in your body
The DHEA test checks how much dehydroepiandrosterone or its sulfate form circulates in the bloodstream. Labs most often measure DHEA-S because it stays in blood longer and provides a clearer picture of adrenal output. DHEA serves as a precursor (building block) for sex hormones such as testosterone and estrogen, so the test gives indirect information about hormone precursors and adrenal gland activity.
Why doctors order the DHEA test
Clinicians order DHEA-S when they suspect adrenal disorders, unexplained hair growth (hirsutism), irregular menstrual cycles, infertility, early puberty in children, or signs of adrenal tumors. Physicians also use the test to monitor known adrenal conditions and to evaluate the hormonal effects of supplements or medications that affect steroid production.
Factors that can affect DHEA results
Age and sex strongly influence DHEA levels; levels peak in young adulthood and decline with age. DHEA supplements and certain medications (for example, glucocorticoids, hormonal contraceptives, and anticonvulsants) can change results. Acute illness, major stress, obesity, pregnancy, and timing of the blood draw may also alter levels. Lab methods and sample handling affect reported values, so compare results against the lab’s reference range.
Understanding reference ranges
Laboratories set reference ranges based on their testing method, equipment, and the population they serve. Reference ranges vary by age and sex and may differ between DHEA and DHEA-S assays. Expect higher “normal” values in adolescents and young adults and progressively lower values with advancing age. Always review your lab report’s specific reference range and ask your clinician how your value compares to what’s typical for your age and sex.
What high or low levels might mean
High DHEA or DHEA-S
- May suggest an adrenal tumor, congenital adrenal hyperplasia (a genetic enzyme deficiency), polycystic ovary syndrome (PCOS) when paired with other signs, or excessive use of DHEA supplements.
- In children, high levels may cause early puberty.
Low DHEA or DHEA-S
- May reflect adrenal insufficiency (reduced adrenal function), long-term steroid (glucocorticoid) therapy, pituitary disorders that affect adrenal stimulation, chronic illness, or normal age-related decline.
- Low levels alone do not diagnose a condition; clinicians interpret results alongside symptoms and other tests.
Related lab abbreviations
- DHEA-S: Dehydroepiandrosterone sulfate (often the tested form)
- ACTH: Adrenocorticotropic hormone (stimulates the adrenal glands)
- 17-OHP: 17-hydroxyprogesterone (used in congenital adrenal hyperplasia workup)
- Cortisol: Main stress hormone from the adrenal glands
- LH: Luteinizing hormone
- FSH: Follicle-stimulating hormone
- T: Testosterone
- Estradiol: A form of estrogen
- CMP: Comprehensive metabolic panel (checks electrolytes and organ function)
Frequently asked questions (FAQ)
Q: Is DHEA the same as DHEA-S?
A: Not exactly. DHEA-S is the sulfated, longer-lasting form measured most often in blood tests. DHEA refers to the parent hormone.
Q: Do supplements affect test results?
A: Yes. Taking DHEA supplements raises blood levels and can lead to misleading results; stop supplements only if a clinician recommends it.
Q: Do I need to fast before a DHEA test?
A: Most labs do not require fasting, but follow the test instructions you receive or ask your clinician.
Q: Can results change day to day?
A: DHEA-S shows less daily fluctuation than some hormones, but illness, stress, and medications can change levels over time.
Q: What follow-up tests might a doctor order?
A: Doctors may check ACTH, cortisol, 17-OHP, or imaging studies (like adrenal scans) depending on suspected causes.
Glossary of key terms
- Adrenal glands: Small organs above the kidneys that produce several hormones, including DHEA.
- DHEA-S: Sulfated DHEA; circulates in blood and provides a stable measure of adrenal androgen production.
- Serum: The liquid part of blood collected after clotting; labs commonly use serum for hormone tests.
- Assay: A laboratory test method used to measure a substance.
- Reference range: The range of values a lab considers typical for healthy people of a certain age and sex.
- Adrenal insufficiency: A condition where the adrenal glands fail to produce sufficient hormones.
- PCOS: Polycystic ovary syndrome, a common hormonal disorder in people with ovaries that can affect periods and hair growth.
- Congenital adrenal hyperplasia: A group of genetic conditions that affect adrenal hormone production.
Understand your health with BloodSense
Lab numbers only tell part of the story. Interpreting DHEA or DHEA-S results requires context: age, sex, symptoms, medications, and other test results all matter. Use your lab values to start a focused conversation with your clinician about adrenal health and hormone balance. If you want clearer explanations of what your DHEA results mean and how they relate to other labs, tools that analyze results side-by-side with reference ranges and common causes can help you take informed next steps.
