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Regional Medical Lab
Test Directory


21 Hydroxylase Antibody

Order Name 21-Hydroxy Ab
Test Number: 3487055
Revision Date 02/18/2020
Test Name Methodology LOINC Code
21 Hydroxylase Antibody
Qualitative ELISA/Quantitative LC-TMS 17781-6 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1.0mL ( 0.2mL) Serum Clot Activator SST Refrigerated
Alternate 1 1.0mL ( 0.2mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Specimen stability: Room temperature: 24 hours, Refrigerated: 1 week, Frozen: 1 month.
Unacceptable: Grossly hemolyzed or lipemic specimens
Testing Schedule Tuesday, Friday 
Expected TAT 2- 7 days after set-up  
Notes Reference Lab: ARUP
ARUP Test Code: 70265
Click Here to view information on the ARUP website.
CPT Code(s) 83519
Lab Section Reference Lab