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HelpTest Code 2DIS Human Leukocyte Antigens (HLA)-DR-DQ Disease Association Typing Low Resolution, Blood
Specimen Required
Container/Tube: Yellow top (ACD solution A or B)
Specimen Volume: 6 mL
Collection Instructions: Send whole blood in original tube. Do not aliquot.
Additional Information: Specimen acceptability is based on extracted DNA concentration and not sample age.
Secondary ID
609356Useful For
Determining class II human leukocyte antigens (HLA) to identify potential disease associations or markers for drug hypersensitivity
Method Name
Polymerase Chain Reaction (PCR)/Next-Generation Sequencing (NGS)
Reporting Name
HLA-DR-DQ DisAssoc Typing LowRes,BSpecimen Type
Whole Blood ACDSpecimen Minimum Volume
3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood ACD | Ambient (preferred) | ||
| Refrigerated | |||
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Clinical Information
Human leukocyte antigen (HLA) class II genes (HLA-DRB1, -DRB3/4/5, -DQA1, -DQB1, -DPA1, -DPB1) are a part of the major histocompatibility gene complex that encodes for proteins involved in immune recognition.
This assay is designed to provide low-to-medium resolution for HLA class II typing. Low-to-medium resolution defines the typing at first field (antigen or allele group level). This contrasts with high-resolution typing, which defines typing at second field or higher (allele level).
Reference Values
Not applicable
Interpretation
Interpretation depends on the rationale for ordering the test.
Day(s) Performed
Monday, Thursday
Report Available
7 to 17 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
81375
81376 x3
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| 2DIS | HLA-DR-DQ DisAssoc Typing LowRes,B | 96640-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 2DA02 | DRDQ DisAssoc Comment | 96625-9 |
| 2DA03 | DRB1 - 1 Equivalent | 57298-2 |
| 2DA04 | DRB1 - 2 Equivalent | 57298-2 |
| 2DA05 | DRB1 - 1 Molecular | 96664-8 |
| 2DA06 | DRB1 - 2 Molecular | 96664-8 |
| 2DA07 | DRB345 - 1 Equivalent | 96673-9 |
| 2DA08 | DRB345 - 2 Equivalent | 96673-9 |
| 2DA09 | DRB345 - 1 Molecular | 96672-1 |
| 2DA10 | DRB345 - 2 Molecular | 96672-1 |
| 2DA11 | DQB1 - 1 Equivalent | 53938-7 |
| 2DA12 | DQB1 - 2 Equivalent | 53938-7 |
| 2DA13 | DQB1 - 1 Molecular | 78017-1 |
| 2DA14 | DQB1 - 2 Molecular | 78017-1 |
| 2DA15 | DQA1 - 1 Molecular | 96654-9 |
| 2DA16 | DQA1 - 2 Molecular | 96654-9 |
| 2DA17 | DPB1 - 1 Molecular | 96648-1 |
| 2DA18 | DPB1 - 2 Molecular | 96648-1 |
| 2DA19 | DPA1 - 1 Molecular | 96643-2 |
| 2DA20 | DPA1 - 2 Molecular | 96643-2 |
| LRTM2 | Test Method | 85069-3 |
Forms
If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.