ClarilabHormones
Cortisol test
The stress hormone from the adrenal glands.
- Typical range
- Morning about 5–25 µg/dL.
- Preparation
- Usually 8 am.
Why it's done
Checked when Cushing's or adrenal insufficiency is suspected.
What a high result can mean
Stress, steroid medicines or, rarely, Cushing's syndrome.
What a low result can mean
Adrenal insufficiency, or stopping steroids suddenly.
Got a report with Cortisol?
Upload the PDF to Clarilab: it reads the values in your browser, flags anything out of range and tracks your results over time.