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HelpTest Code CRAV Cortisol, Right Adrenal Vein, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Cortisol, RAVSpecimen Type
SerumOrdering Guidance
For confirming the presence of synthetic steroids, order SGSS / Synthetic Glucocorticoid Screen, Serum.
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube: Red top
Specimen Volume: 1.5 mL
Submission Container/Tube: Plastic vial
Collection Instructions:
1. Morning (8 a.m.) and afternoon (4 p.m.) specimens are preferred.
2. Include time of collection.
3. Centrifuge and aliquot serum into a plastic vial.
Additional Information: If multiple specimens are collected, send a separate order for each specimen.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Specimen Minimum Volume
0.5 mL
Special Instructions
Day(s) Performed
Monday through Friday
Specimen Retention Time
14 daysReport Available
2 to 5 daysReference Values
No established reference values
Useful For
Testing cortisol levels in the right adrenal vein
Second-order testing when cortisol measurement by immunoassay gives results that are not consistent with clinical symptoms, or if patients are known to, or suspected of, taking exogenous synthetic steroids
An adjunct in the differential diagnosis of primary and secondary adrenal insufficiency
An adjunct in the differential diagnosis of Cushing syndrome
CPT Code Information
82533
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CRAV | Cortisol, RAV | 2143-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 6345 | Cortisol, RAV | 2143-6 |