DHEA-S is the sulfated form of dehydroepiandrosterone, produced almost entirely by the adrenal cortex and serving as a precursor pool the body converts onward into androgens and estrogens. Because its concentration is stable and it comes from one source, it is used as a marker of adrenal androgen output. It says little about the gonads themselves.
No readings for this marker yet.
Raised DHEA-S most often reflects increased adrenal androgen production, which can accompany polycystic ovary syndrome, congenital adrenal hyperplasia or, when markedly high, an adrenal tumour, and in women may present alongside acne, hair growth or cycle change. Lowered values are common with adrenal insufficiency, long-term glucocorticoid use or pituitary disease, and levels fall naturally and substantially with age. Age and sex therefore shape what any given number means. A doctor decides which of these directions to pursue, and one measurement is not enough to settle it.
Unlike cortisol, DHEA-S has a long half-life and no meaningful daily rhythm, so time of sampling matters little, but over-the-counter DHEA supplements raise it directly and glucocorticoids suppress it. Acute illness lowers it. It is read alongside testosterone when the question is where an androgen excess arises, and alongside cortisol when adrenal function as a whole is in question.
Reference ranges are general adult values and depend on lab, assay, age and sex. For orientation, not diagnosis — discuss results with your doctor.