Esoterix
Synonyms
Free Cortisol
Expected Turnaround Time
4 - 7 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Specimen Requirements
Specimen
Urine (24-hour, well-mixed)
Volume
50 mL aliquot
Minimum Volume
5 mL aliquot (Note: This volume does not allow for repeat testing.)
Container
Urine container, 24-hour
Collection
Collect aliquot of a well-mixed 24-hour urine. Add boric acid (0.5 gm/100 mL) as preservative. Indicate 24-hour volume.
Storage Instructions
Store refrigerated or frozen. Ship frozen on dry ice or refrigerated with cool pack.
Test Details
Methodology
High-pressure liquid chromatography/tandem mass spectrometry (HPLC/MS-MS), colorometric