Cortisol

Method(s) Chemiluminescent Immunoassay
Specimen Required
Collect

One 5 mL gold (SST) top tube. Heparinized plasma is also acceptable.

Transport 1 mL serum at 2-8ºC.
Stability

Ambient: 8 hours; Refrigerated: 2 days; Frozen: 1 month

Schedule Daily
Billing Code 1010068
CPTCode 82533
Notes

Use specific codes to order timed cortisols for stimulation or suppression studies.

Test CodeTest Name
CORCortisol, Random
CORBCortisol, Baseline
COR30Cortisol, 30 min
COR60Cortisol, 60 min
COR90Cortisol, 90 min
COR120Cortisol, 120 min
Preferred Specimen Collection Device(s)
Reference Interval

7-9 a.m. 4.3 - 22.4 mcg/dL
4-6 p.m. 3.1 - 16.7 mcg/dL
Late afternoon levels fall to approximately half of morning level.

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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