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Celiac Disease HLA DQ Association

Order Name CELIAC HLA
Test Number: 5194335
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Celiac Disease HLA DQ Association
Polymerase Chain Reaction  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 7 mL mL (3 mL) EDTA Whole Blood EDTA (Lavender Top)
Alternate 1 See Instructions Buccal swab See Instructions See Instructions
Instructions Notes: 3 mL or four buccal swabs
Specimen Type: Lavender-top (EDTA) tube or four buccal swabs in a sealed envelope (buccal swab kit). If submitting buccal swabs, please use the kit provided by LabCorp. To obtain the buccal swab kit or to discuss other specimen types, please telephone 800-533-1037.
Specimen Storage: Maintain specimen at room temperature. Protect from extreme heat or cold.
Specimen Collection: Not Available
Special Instructions: If you have questions, please telephone HLA customer service at 800-533-1037 for assistance in selecting the appropriate HLA test for the patient.
Specimen Stability: Ambient: Not Available, Refrigerated : Not Available, Frozen: Not Available
GENERAL INFORMATION
Expected TAT 3-7 Days  
Clinical Use Aids in the diagnosis of celiac disease. The HLA DQ Association test provides genotyping for detection of HLA-DQ2 (DQA1*05:01 or 05:05 and DQB1*02:01 or 02:02) and HLA-DQ8 (DQB1*03:02). Patients with DQ2, half DQ2 and/or DQ8 are predisposed to celiac disease. A negative result essentially rules out celiac disease. In addition to DQ2 and DQ8 status, the report also includes complete DQA and DQB genotypes, homozygosity for DQB1*02, and genetic risk assessment. 
Notes Labcorp Test Code: 167082
CPT Code(s) 81377x2
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab