Home
HelpTest ID FCORT Cortisol, Free, LC/MS/MS
Method Name
Liquid Chromatography Tandem Mass Spectrometry, Equilibrium Dialysis
Reporting Name
Cortisol, Free, LC/MS/MSSpecimen Type
VariesSubmit only 1 of the following:
Serum
Draw blood in a plain, red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 2 mL of serum refrigerated in a plastic vial.
Plasma
Draw blood in lavender-top EDTA tube(s). Spin down and send 2 mL of EDTA plasma refrigerated in a plastic vial.
Specimen Minimum Volume
0.7 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Refrigerated (preferred) | 7 days |
| Frozen | ||
Reference Values
Adult Reference Ranges for Cortisol, Free, LC/MS/MS:
8:00 - 10:00 AM 0.07 - 0.93 mcg/dL
4:00 - 6:00 PM 0.04 - 0.45 mcg/dL
10:00 - 11:00 PM 0.04 - 0.35 mcg/dL
Day(s) Performed
Sunday through Thursday
Report Available
5 daysPerforming Laboratory
Quest Diagnostics Nichols InstituteCPT Code Information
82530