1 doctor weighed in:

What is a 8am cortisol level test for? Why 8am? Is that hour your highest level?

1 doctor weighed in
Dr. Norman Levine
Dermatology

In brief: Cortisol

An 8 am cortisol level measures the function of the adrenal gland.
It is done at 8 am because the levels are usually higher.

In brief: Cortisol

An 8 am cortisol level measures the function of the adrenal gland.
It is done at 8 am because the levels are usually higher.
Dr. Norman Levine
Dr. Norman Levine
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
12 years in practice
93K people helped
Continue
108,000 doctors available
Read more answers from doctors