Cortisol, Free and Cortisone, 24-Hour Urine (37355X)

Test Code

89771N

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen

2 mL urine collected in a 24-hour urine container - no preservative

Minimum Volume

0.5 mL

Other Acceptable Specimens

25 mL 6N HCl • 10 mL conc. glacial acetic acid • 10 g Boric acid

Instructions

Collect urine with 10 grams of boric acid or keep urine refrigerated during collection if preservative is not used. Record 24-hour urine volume on test requisition and urine vial. Reference ranges do not apply to random urine samples.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 14 days
Refrigerated: 21 days
Frozen: 90 days

Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

Setup Schedule

Night

Clinical Significance

Urinary free cortisol is useful in the detection of patients with Cushing's syndrome for whom free cortisol concentrations are elevated

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.