Test Catalog

Test ID: COCRU    
Cortisol/Cortisone, Free, Random, Urine

Useful For Suggests clinical disorders or settings where the test may be helpful

Investigating suspected Cushing syndrome (hypercortisolism), when a 24-hour collection is prohibitive (ie, pediatric patients).


Assisting in diagnosing acquired or inherited abnormalities of 11-beta-hydroxy steroid dehydrogenase (cortisol to cortisone ratio)


Diagnosis of pseudo-hyperaldosteronism due to excessive licorice consumption

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
RCTUCreatinine ConcNoYes
COCORCortisol, Random, UNoYes

Method Name A short description of the method used to perform the test

RCTU: Enzymatic Colorimetric Assay

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

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Cortisol/Cortisone, Free, Random, U

Aliases Lists additional common names for a test, as an aid in searching

Cortisol Free U
Cortisol, Random, Urine
Cortisol/Cortisone, Random U
Cortisone, Random, Urine
Free Cortisol
Free Urinary Cortisol
Urinary Free Cortisol