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Cortisol, 6 Specimens [6734X]
Test Code67348
CPT Codes
82533 (x6)
Preferred Specimen
1 mL (x6) serum
Minimum Volume
0.5 mL (x6)
Instructions
Clearly mark time drawn on all tubes. Collect 1 mL serum for each timed sample from a red-top, no additive tube or serum separator tube. Centrifuge and transfer serum specimens to 6 separate, sterile, plastic, screw-capped vials. Transport six samples at room temperature in the same shipping container.
This assay is not recommended when patient is receiving prednisone/prednisolone therapy, due to cross-reactivity with the antibody used in this assay.
This assay is not recommended when patient is receiving prednisone/prednisolone therapy, due to cross-reactivity with the antibody used in this assay.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
| Premature Infants (31-35 Weeks): | ≤15.0 µg/dL |
| Term Infants: | ≤14.0 µg/dL |
| 4 Days-1 Month: | Not established |
| 2-11 Months: | A.M. 3.0-23.0 µg/dL |
| P.M. Not established | |
| 1-17 Years: | A.M. 3.0-25.0 µg/dL |
| P.M. 3.0-17.0 µg/dL | |
| Adult 8 A.M. (7-9 A.M.) specimen: | 4.0-22.0 µg/dL |
| Adult 4 P.M. (3-5 P.M.) specimen: | 3.0-17.0 µg/dL |
Clinical Significance
Cortisol is increased in Cushing's disease and decreased in Addison's disease (adrenal insufficiency).
