Cortisol, Total
Test code
CPT code(s)*
Clinical significance
Details
Methodology
Immunoassay (IA)
Alternative name(s)
Cortisol, Serum,Hydrocortisone,Total Cortisol
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 mL serum |
| Minimum volume | 0.5 mL |
| Collection instructions | Note: Assay not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay. |
| Transport container | Serum separator tube (SST) |
| Transport temperature | Room temperature |
| Specimen stability | Room temperature: 7 days Refrigerated: 7 days Frozen: 28 days |
Reference Range(s)
| 0-3 Days (infants) | |
| Premature (31-35 Weeks) | a.m. or p.m. ≤15.0 mcg/dL |
| Term | a.m. or p.m. ≤14.0 mcg/dL |
| 4 Days-1 Month | a.m. or p.m. Not established |
| 2-11 Months | a.m. 3.0-23.0 mcg/dL p.m. Not established |
| 1-17 Years | a.m. 3.0-25.0 mcg/dL p.m. 3.0-17.0 mcg/dL |
| Adult 8 a.m. (7-9 a.m.) specimen | 4.0-22.0 mcg/dL |
| Adult 4 p.m. (3-5 p.m.) specimen | 3.0-17.0 mcg/dL |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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