Test Name: Cortisol
Health Link Test Code: CORT
LIS Test Code: CORT
CPT Code(s): 82533
Methodology: Chemiluminescent Immunoassay
Days Performed: Daily.
In-Lab Turnaround Time: 4 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Red cap with yellow ring (SST)
Also Acceptable: Red top
Collection Volume: 4 mL
Pediatric Collection Volume: 1 mL
14 days removed from cells, clot, or gel
8 hours on gel
Sample Analyzed: Serum
Testing Volume: 1 mL
Pediatric Testing Volume: 0.25 mL
Centrifuge. If a complete barrier has not formed, transfer cell-free serum to plastic vial. Refrigerate.
Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.
Applies to all ages.
Cortisol levels may be artificially elevated in patients receiving fludrocortisone, prednisolone or prednisone (which is converted to prednisolone) due to the antibody's cross reactivity with prednisolone.
Interpretation Type: Interpretive Guidelines
Results may be affected if patient has developed heterophilic antibodies due to exposure to animal based protein products.