Cortisol, AM
Use
The Cortisol, AM test measures the level of cortisol in the blood collected in the morning. Cortisol is a hormone produced by the adrenal glands and plays a key role in stress response, metabolism regulation, and immune function. This test is typically used to diagnose disorders of the adrenal glands such as Addison's disease, Cushing's syndrome, and to monitor treatment of these conditions.
Special Instructions
State collection time and date on the sample. Patients should stop biotin consumption at least 72 hours before sample collection to avoid interference with test results.
Limitations
Results may be affected if the sample is collected from a person taking high doses of biotin. The test may also display interference from other factors, hence additional confirmatory tests might be required in some cases. Irregular collection or improper handling of the sample can lead to inaccurate results.
Methodology
Immunoassay (ECLIA)
Biomarkers
LOINC Codes
- 9813-7
- 9813-7
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.7 mL (Note: This volume does not allow for repeat testing.)
Container
Gel-barrier tube (preferred) or red-top tube
Collection Instructions
If a red-top tube is used, transfer separated serum to a plastic transport tube.
Storage Instructions
Room temperature
Causes for Rejection
Citrate plasma specimen; improper labeling
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |