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Cortisol, Serum

Mnemonic:    [CORT]
Name:    Cortisol, Serum
Specimen:    1 mL serum from a Red SST or Red top tube, or plasma from a Green PST.
Spec Stability:    Stable 5 days refrigerated.
Reference Range:    Morning Sample: 6 - 23 ug/dL
 Evening Sample: 0 - 9 ug/dL
  Method:    Chemiluminescent Immunoassay
Note:    If AM and PM cortisol levels are requested, the recommended collection times are 8 AM and 8 PM.