Test Name: CELIAC HLA DQ ASSOCIATION
Test Code: 2194269
Alias: 167652
Celiac HLA DQ
LAB2385
CPT Code(s): 81337 x 2  
Preferred Specimen: 7 mL
Container: EDTA Lavender x 2
Minimum Volume: 3 mL
Collection Instructions: Draw blood in lavender top EDTA tube.  Invert to mix with preservatives.  Maintain specimen at room temperature.  Protect from extreme heat or cold.
Transport Temperature: Room Temperature
Stability:

Room temperature: 1 month

Frozen: Indefinite
Rejection Criteria: Incorrect specimen container (tube type); yellow-top (ACD) tube
Limitations: This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
Schedule: Report Available: 4-8 days
Method: Next-generation sequencing or other methods as needed
Performing Lab: Lab Corp #167652
Clinical Significance: This test 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.
Use: Updated: 09/19/2025
Reference Ranges: Negative

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