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Test Code CORTISOL AM Cortisol, A.M., Serum

Specimen Requirements

Draw blood in a plain, red-top tube(s), gold top tube(s), green top tube(s), lavender or blue. Spin down and send 1 mL of serum or plasma refrigerated. Morning (7 a.m.-9 a.m.) specimen is preferred.

Note:  Include time of draw on request form.

Performing Laboratory

Conway Regional Clinical Laboratory Services

Reference Values

7-25 µg/dL

Critical value (automatic call-back):  >25 µg/dL

Circulating cortisol results from patients receiving prednisone or prednisone therapy may be falsely elevated. Caution must be exercised with cortisol determinations for patients undergoing therapy with these and structurally related synthetic corticosteroids.

Methodology

Electrochemiluminescence

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

82533