HLA DQA1 and DQB1 Intermediate Resolution

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Turnaround Time: 3 - 7 days
CPT Code:


Test Type: 7 mL or 4 buccal swabs


DQA1 and DQB1 antigens may be correlated with certain disease states or other clinical conditions. This test is not to be used for celiac or narcolepsy testing. Please order the appropriate tests for those indications.

Even with appropriate precautions, an occasional specimen may not be satisfactory for testing. In such cases, fresh specimens should be collected for retesting.

Collection Details:

Collection Instructions:

Lavender-top (EDTA) tube or 4 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.

Venous blood collection or 4 buccal swabs Room temperature and protect from light.