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Cortisol, P.M.
Test Code4213
CPT Codes
82533
Preferred Specimen
1 mL serum
Patient Preparation
Assay not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay
Minimum Volume
0.5 mL
Instructions
Collect specimen between 3-5 p.m. Indicate the collection time on specimen container and test requisition.
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
0-3 Days (infants) | |
Premature (31-35 Weeks) | ≤15.0 mcg/dL |
Term | ≤14.0 mcg/dL |
4 Days-11 Months | Not established |
≥1 Year 4 p.m. (3-5 p.m.) specimen | 3.0-17.0 mcg/dL |
Clinical Significance
Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).