Cortisol 24 Hr Urine Free CORT24 Free

Synonyms

Allscripts (AEHR) Order Name

Cortisol 24 Hr. Urine Free

Sunrise Clinical Manager (SCM) Order Name

Cortisol Free - Urine 24 Hour

EPIC Order Name

24 Hour Urine, Cortisol Free

Clinical Info

Preferred screening test for Cushing syndrome
Diagnosis of pseudo-hyperaldosteronism due to excessive licorice consumption
Test may not be useful in the evaluation of adrenal insufficiency

Specimen Type

Urine

Container

24hr Ur 10g Boric Ac

Collection Instructions

Container/Tube: Plastic, urine tube
Specimen: 5 mL 24 hr urine collection with 10 g of boric acid or 50 % Acetic Acid as preservative at the start of collection (3 mL min)
Collection Instructions:
1. Collect urine for 24 hours.
2. Add 10 g of boric acid as preservative at start of
collection.
Transport Temperature: Refrigerated
Stability: 7 Days Room Temperature
14 Days Refrigerated
28 Days Frozen

Transport Instructions

Refrigerated

Specimen Stability

7 Days Room Temperature
14 Days Refrigerated
28 Days Frozen

Methodology

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

Days Performed

Monday through Friday; 4 p.m.

Performing Laboratory

Mayo Medical Laboratories

CPT

82530
LOINC Code: 43126-2

PDM

5900038

Result Interpretation

0-2 years: not established

3-8 years: 1.4-20 mcg/24 hours

9-12 years: 2.6-37 mcg/24 hours

13-17 years: 4.0-56 mcg/24 hours

≥18 years: 3.5-45 mcg/24 hours

 

Use the factor below to convert from mcg/24 hours to nmol

Forms