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A member asked:
My cortisol level is 26.5. what is normal? i got the test done around 4pm and it was a blood test.
3 doctors weighed in across 2 answers
Abnormal See your Dr: In normal subjects serum cortisol concentrations are higher in the early morning (about 6 am), ranging from 10 to 20 mcg/dl (275 to 555 nmol/l). Serum cortisol concentrations range from 3 to 10 mcg/dl (85 to 275 nmol/l) at 4 pm, and the concentrations are lowest, less than 5 mcg/dl (140 nmol/l), one hour after the usual time of sleep. Need more info.Read the units ?
Answered 4/11/2017
4.7k views
Depends: On why it was checked. A cortisol >40 is diagnostic of cushing's syndrome, a disease caused by too much cortisol. A random cortisol of >18 rules out adrenal insufficiency, a disease of too little cortisol.
Answered 5/23/2015
4.7k views
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