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Cortisol, 4 Specimens [6736X]
Test Code67368
CPT Codes
82533 (x4)
Preferred Specimen
1 mL (x4) serum
Minimum Volume
0.5 mL (x4)
Instructions
Clearly mark time drawn on all tubes. This assay is not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay. Collect 1 mL serum for each timed sample from a red top no additive tube or SST, place in separate sterile, plastic screw top vials and ship room temperature.
Note: This assay is not recommended when patient is receiving prednisone/prednisolone therapy, due to cross-reactivity with the antibody used in this assay.
Note: This assay is not recommended when patient is receiving prednisone/prednisolone therapy, due to cross-reactivity with the antibody used in this assay.
Transport Container
Plastic screw-cap vials (x4)
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)