Additional information
| REQUIREMENT(S) | CLOTTED BLOOD OR SERUM |
|---|---|
| SPECIMEN | BLOOD |
| TEST DURATION | 7 TO 8 DAYS |
CORTISOL PM
A cortisol blood test is usually done twice a day–once in the morning when cortisol levels are at their highest, and again around 4 p.m., when levels are much lower. Cortisol may also be measured in a urine or saliva test.
