Cortisol, Seven Specimens
Use
The Cortisol, Seven Specimens test is used to evaluate the adrenal gland function by measuring cortisol levels in the blood. Cortisol is a steroid hormone produced by the adrenal glands that plays a role in various bodily functions, including metabolism and the immune response. This test helps diagnose and monitor conditions such as Cushing's syndrome, Addison's disease, and other disorders related to cortisol production.
Special Instructions
Patients should avoid consuming biotin (vitamin B7) supplements at least 72 hours prior to the collection of the specimen. Biotin can interfere with the test results. Sequential sample times should be followed as per the clinical indication and physician's instructions.
Limitations
The test may exhibit interference in samples collected from patients consuming high doses of biotin. Additionally, the storage and handling of the specimen according to specified instructions are crucial to maintain sample integrity. The test is sensitive to collection times, and deviations from the recommended times can affect results. Results are dependent on specific AM or PM collection intervals for accurate interpretation.
Methodology
Other
Biomarkers
LOINC Codes
- 43215-3
- 21223-3
- 12557-5
- 12558-3
- 12559-1
- 12560-9
- 12561-7
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
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.
Patient Preparation
Patients should stop biotin consumption at least 72 hours prior to sample collection.
Storage Instructions
Store at room temperature