TEST DIRECTORY | MIDx Labs

CORTISOL (CORT)

Primary glucocorticoid hormone used to evaluate adrenal gland function and diagnose conditions such as Cushing's syndrome or adrenal insufficiency.

LIS TEST CODE: CORT

CPT CODE: 82533

ALIASES: CORT, Corticosteroids, Dexamethasone Suppression Test, Diurnal Corticoids

METHODOLOGY: Chemiluminescent Microparticle Immunoassay (CMIA)

SPECIMEN:

- Type: Serum

- Container: Gold Top (SST) Vacutainer

- Minimum Volume Required: 1 mL

- Storage/Handling: Allow 30 minutes for blood to clot, then centrifuge specimen at 3500 RPM for 10 minutes. Maintain specimen in the refrigerator or in the freezer until testing can be performed.

NOTE: If freezing is required to preserve stability, transfer serum into a separate plastic screw-cap transport container.

- Stability: Room Temperature (20-25 °C): Not Accepted

Refrigerated (2-8 °C): 14 days

Frozen (-20 °C or colder): 1 month; avoid multiple freeze/thaw cycles.

- Turnaround Time: 24 - 48 hours from receipt.

Special Instructions: N/A

REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

REFERENCE RANGES:

Males & Females (ug/dL)

>= 1 year of age:

5.0 - 25.0 µg/dL (if collected in a.m.)
2.0 - 14.0 µg/dL (if collected in p.m.)