Cortisol normal range — check your value

Roughly 6 to 23 mcg/dL on an 8 am sample. Evening values are normally much lower.

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Your Cortisol test value

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Cortisol

µg/dL

What Cortisol measures

The adrenal stress hormone that regulates blood sugar, blood pressure and the body's response to illness.

Cortisol normal range chart

ResultCortisol (µg/dL)

Below rangeBelow 4.82

In range4.82 – 19.5

Above range19.5 and above

These bands are for female, 31–45 years. Enter your age and gender above to see the bands for you. The table below shows the range for every age and gender.

Cortisol normal range by age and gender

AgeMaleFemale

0–1 years2 – 20 µg/dL2 – 20 µg/dL

2–6 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

7–11 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

12–17 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

18–30 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

31–45 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

46–60 years4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

60 years and above4.82 – 19.5 µg/dL4.82 – 19.5 µg/dL

What a high Cortisol means, and common causes

Cortisol is above range. Because it follows a daily rhythm, the time the sample was taken matters as much as the number.

Common causes: Stress or acute illness, Cushing's syndrome, steroid medicines, pregnancy and contraceptive pills, and a sample taken at the wrong time of day.

What a low Cortisol means, and common causes

Cortisol is below range, which when genuine can be dangerous because the body cannot respond to stress.

Common causes: Adrenal insufficiency including Addison's disease, pituitary disease, and sudden withdrawal of long-term steroid medicines.

Frequently asked questions

Roughly 6 to 23 mcg/dL on an 8 am sample. Evening values are normally much lower.

Levels peak around 8 am and fall through the day. A sample at the wrong time cannot be interpreted and usually has to be repeated.

Subah ismein sabse zyada hota hai, aur shaam tak gir jaata hai. Isliye samay likhwana zaroori hai.

Please note. This page explains what a number means against reference ranges for your age and gender. It does not diagnose anything, cannot see the rest of your report, and is no substitute for a doctor. If your lab’s printed range differs, your lab’s range applies.