CORTISOL, FREE, LC/MS/MS

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

Alternate Specimen
Plasma: EDTA

Rejection Criteria
SST

Methodology
Liquid Chromatography/Tandem Mass Spectrometry, Equilibrium Dialysis

Stability
Room temperature: 4 hours; Refrigerated: 7 days; Frozen: 2 years

Reference Range
By report

Performed
Sunday-Thursday

Turnaround Time6-8 days
Test CodeCORF
CPT-4 Code (s)
82530
LOINC Codes
2145-1

Warde
Medical
Laboratory