CORTISOL, FREE & TOTAL

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 2.0 mL serum (0.7 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA

Rejection Criteria
Grossly hemolyzed specimens

Methodology
Liquid Chromatography/Mass Spectrometry/Equilibrium Dialysis

Stability
Room Temperature: 2 days; Refrigerated: 7 days; Frozen: 2 years

Reference Range
By report

Performed
Sunday-Thursday

Turnaround Time8-10 days
Test CodeCORFQ
CPT-4 Code (s)
82530, 82533
LOINC Codes
2143-6
2145-1

Warde
Medical
Laboratory