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Cortisol, Free, 24 Hr Urine [11280X]Test Code
2 mL 24-Hour Urine Instructions: Instruction: Collect 24-hour urine without preservative (preferred). Record 24-hour urine volume on test request form and urine vial. 24-hour urine specimens, collected with the following preservatives, are acceptable: 25 mL 6N HCl; 10 mL conc. Glacial Acetic Acid; 10 g Boric Acid.
Other Acceptable Specimens
2 mL 24-Hour Urine (Min0.8 mL) Urine Container, leak-proof (25 mL 6N HCl); Refrigerated; -OR- 2 mL 24-Hour Urine (Min0.8 mL) Urine Container, leak-proof (10mL conc glacial acetic acid); Refrigerated; -OR- 2 mL 24-Hour Urine (Min0.8 mL) Urine Container, leak-proof (10 g boric acid); Refrigerated;
Urine Container, leak-proof
Room Temperature: 48 hours Refrigerated: 1 week Frozen: 5 months
Liquid Chromatography, Tandem Mass Spectrometry (LC/MS/MS)
Monday-Friday, Sunday Night Report available: 5 Days
Urinary Free Cortisol is useful in the detection of patients with Cushing's syndrome for whom Free Cortisol concentrations are elevated.
Quest Diagnostics Nichols Institute