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Test Code DCORT 11-Deoxycortisol, Serum

Reporting Name

11-Deoxycortisol, S

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

Method Name

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


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 Type

Serum

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

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

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Reference Values

≤18 years: <344 ng/dL

>18 years: 10-79 ng/dL

 

For SI unit Reference Values, see https://www.mayocliniclabs.com/order-tests/si-unit-conversion.html

Day(s) and Time(s) Performed

Tuesday; 10 a.m.

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

LOINC Code Information

Test ID Test Order Name Order LOINC Value
DCORT 11-Deoxycortisol, S 1657-6

 

Result ID Test Result Name Result LOINC Value
46923 11-Deoxycortisol, S 1657-6

Special Instructions