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Cortisol, Urinary Free (24 hour) *

SIM

15121 

CPT

82530 

Synonyms

Cortisol,24-hour Urine 

Specimen Type

Urine 24-hour 

Container

24-Hour Plastic urine container containing HCl or 1 g boric acid. 24-hour plastic urine container with no preservative is also acceptable for this test.

Collection Instructions

Instruct the patient to void at 8 A.M. and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24 hour period. (ie,8 A.M. the next morning) Container must be labeled with the patient name, date and time collection started and date and time collection finished .Refrigerate during the collection. Screw lid on securely.

Volume

Volume: 100 ml. aliquot
Min. volume: 10 ml. aliquot
These are the volumes sent to Lab Corp

Additional Information

Useful in the initial evaluation of patients with suspected Cushing syndrome.

Patient Preparation

Specimen Processing Instructions

Mix urine well.
Measure and aliquot the 24 hour volume.
Write the total 24 hour volume on the aliquot container.

Transport Requirements

Refrigerate

Specimen Stability

Refrigerated 14 days 

Rejection Criteria

Specimen not refrigerated; specimen not collected correctly

Reference Range

Reference Range accompanies report

CriticalValue

 

Test Includes

Free Cortisol 

Methodology

Liquid chromatography/tandem mass spectrometry (LC/MS-MS) 

Testing Frequency

 

LCA

004432 

Reviewed By

Lisa McBride 

Reviewed Date

2/13/2018 

Supplemental

* Denotes Reference Lab test

Reviewed by Lisa McBride on February 13, 2018

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