DHEA Sulphate Blood Test: Normal Ranges, Causes & What Your Results Mean

What Is DHEA Sulphate?

Dehydroepiandrosterone sulphate (DHEA-S) is the most abundant steroid hormone in the human body. Produced primarily by the adrenal glands, it serves as a precursor to both testosterone and oestrogen. DHEA-S circulates in the blood at much higher concentrations than DHEA itself because sulphation extends its half-life to 7–10 hours.

DHEA-S levels follow a distinctive lifetime pattern: they rise sharply during adrenarche (ages 6–8), peak in the mid-20s, and then decline steadily at approximately 2–3% per year. By age 70–80, levels may be only 10–20% of peak values. This decline has led researchers to investigate DHEA-S as a biomarker of biological ageing.

Because DHEA-S feeds into both androgenic and oestrogenic pathways, it plays roles in immune function, bone density, mood regulation, libido, and body composition.

Why Is DHEA Sulphate Tested?

• Adrenal function assessment - DHEA-S is a direct marker of adrenal androgen production
• Investigating androgen excess in women - elevated DHEA-S can cause hirsutism, acne, and menstrual irregularities
• PCOS evaluation - approximately 20–30% of women with polycystic ovary syndrome have elevated DHEA-S
• Adrenal tumour screening - markedly elevated DHEA-S may indicate an adrenal adenoma or carcinoma
• Fatigue and low libido - low DHEA-S is associated with chronic fatigue, reduced vitality, and decreased sex drive
• Ageing and longevity research - DHEA-S is increasingly used as a biological age marker

Normal Ranges

DHEA-S is best measured in a morning fasting sample for consistency, although it is less affected by diurnal variation than cortisol.

What Do High DHEA Sulphate Levels Mean?

• Polycystic ovary syndrome (PCOS) - adrenal-type PCOS with elevated DHEA-S
• Congenital adrenal hyperplasia (CAH) - enzymatic defects in cortisol synthesis shunt precursors toward DHEA-S
• Adrenal tumours - adrenal adenomas or carcinomas can produce excessive DHEA-S
• Cushing's syndrome - ACTH-dependent forms may elevate adrenal androgens
• DHEA supplementation - over-the-counter DHEA supplements directly raise DHEA-S levels
• Stress - chronic stress activates the HPA axis, potentially elevating adrenal androgens

What Do Low DHEA Sulphate Levels Mean?

• Age-related decline - the most common cause; DHEA-S naturally decreases with ageing
• Adrenal insufficiency - Addison's disease or secondary adrenal insufficiency reduces all adrenal hormones
• Chronic illness - prolonged illness, inflammation, and chronic fatigue syndrome are associated with lower DHEA-S
• Long-term corticosteroid use - exogenous glucocorticoids suppress adrenal function
• Anorexia nervosa - severe calorie restriction impairs adrenal function
• Hypopituitarism - reduced ACTH secretion limits adrenal stimulation

How to Improve Your DHEA Sulphate Levels

• Manage stress - chronic cortisol elevation can suppress DHEA-S production; practise mindfulness, yoga, or regular relaxation techniques
• Regular exercise - moderate resistance training has been shown to support healthy DHEA-S levels
• Quality sleep - DHEA-S production follows circadian patterns; prioritise 7–9 hours of uninterrupted sleep
• Balanced nutrition - ensure adequate cholesterol intake (the precursor to all steroid hormones), healthy fats, and micronutrients including zinc and magnesium
• Maintain a healthy weight — obesity alters the HPA axis and can affect adrenal hormone production
• Discuss supplementation — DHEA supplements are available but should only be taken under medical supervision due to hormonal effects

When Should You Get Tested?

• Women experiencing excess hair growth, acne, or irregular periods
• Men or women with persistent fatigue, low libido, or low mood
• As part of a hormone or biological age assessment
• If adrenal insufficiency or adrenal tumour is suspected
• Before and during DHEA supplementation to monitor levels

Which Lola Health Tests Include DHEA Sulphate?

DHEA-S is available as an add-on biomarker with any Lola Health blood test. It pairs well with our Hormone 7 panel for a full picture of your hormonal health, or with Peak Insights for comprehensive wellness and biological ageing assessment.