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Test Code BLOD1063 11-Deoxycortisol, Serum

Additional Codes

Mayo Test Code: DCORT

Useful For

Diagnostic workup of patients with congenital adrenal hyperplasia

 

Part of metyrapone testing in the workup of suspected secondary or tertiary adrenal insufficiency

 

Part of metyrapone testing in the differential diagnostic workup of Cushing syndrome

Testing Algorithm

See Steroid Pathways in Special Instructions.

Special Instructions

Method Name

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

Specimen Type

Serum


Necessary Information


Indicate if specimen was drawn before or after metyrapone.



Specimen Required


Container/Tube: 

Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 0.5 mL

Collection Instructions: Morning (8 a.m.) specimen is preferred.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reject Due To

Hemolysis

Mild OK; Gross reject

Lipemia

Mild OK; Gross OK

Icterus

Mild OK; Gross OK

Other

NA

Reference Values

≤18 years: <344 ng/dL

>18 years: 10-79 ng/dL

Day(s) and Time(s) Performed

Tuesday; 10 a.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82634