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Labcorp Oklahoma, Inc.
Test Directory


HLA B27 Antigen

Order Name HLA B27
Test Number: 5580000
Revision Date 05/15/2023
Test Name Methodology LOINC Code
HLA B27 Antigen
Allele Specific Amplification n/a 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3.0mL (0.5mL) Whole Blood EDTA (Lavender Top) Room Temperature
Instructions Specimen: Whole blood - DO NOT Centrifuge or Refrigerate. Collect Monday through Thursday only!
Specimen must be received in the lab section by Thursday afternoon or collect sample on Monday.
Minimum Volume: 0.5 mL (Note: This volume does not allow for repeat testing.)
Specimen stability: 5 days Room Temperature. Frozen unacceptable
Expected TAT 3 - 7 days  
Clinical Use Assist in the diagnosis of ankylosing spondylitis. 
Performing Labcorp Test Code 006924 
Notes This test is being sent out to Labcorp TC# 006924
CPT Code(s) 81374
Lab Section Reference Lab