About This Test
Cortisol, the main glucocorticoid plays a central role in glucose metabolism and in the bodys response to stress. Cortisol is
released in a cyclic fashion resulting in diurnal variations.
·Serum cortisol levels are useful for discrimination between primary and secondary adrenal insufficiency. In primary adrenal
insufficiency, adrenocorticotropic hormone (ACTH) levels are increased and cortisol levels are decreased; in secondary adrenal
insufficiency both ACTH and cortisol levels are decreased.
Patients taking prednisone may have falsely increased cortisol levels due to 41% cross-reactivity. Cortisol levels may be
increased in pregnancy and with exogenous estrogens.
Test Parameters (1)
- CORTISOL EVENING, Serum
Home Collection
✓ Available
Reports Available In
1 Day
Preparation / Prerequisite
Sample should be collected between 4 - 5pm.
2 mL (1 mL min.) serum from 1 SST. Diurnal variation present; take specimen between 4-5 pm Specify time and date on sample container. transport refrigerated or frozen.
Frequently Asked Questions
These tests measure things like blood sugar, liver function, kidney function, cholesterol and electrolytes.
Fasting is not required.
Mon-Sat, sample before 4pm, report same day and sunday reports, next day.
Yes. We use fully automated machines that ensure accurate and consistent results.
Yes — evening cortisol levels can detect health problems, primarily related to adrenal gland function, stress response, and certain endocrine disorders.
TAT Policy
The Turnaround Time (TAT) depends on the following factors:
- Registration date and time
- Type of scan or test
- Scan time or sample collection time
In uncommon circumstances, TAT may be delayed due to test complexity or reasons beyond our control. You will be informed of the estimated TAT at the time of registration.
