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HelpTest Code 5801 HLA-B*5801 genotype, Allopurinol hypersensitivity
Additional Codes
| Epic Ordering Code | NA |
| NBS code | LBC13455 |
| Service code | 1035100 |
Specimen Requirements
Submit the following:
| Preferred: |
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Purple Top |
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Specimen Stability
| Specimen Type | Whole Blood |
| Ambient | 7 days |
| Refrigerate | 7 days |
Methodology
Allele-specific Polymerase Chain Reaction
Days and Times Performed
TAT 1 - 5 days
Reference Interval
An interpretative report will be provided.
Testing Laboratory
National University Hospital
Genomics Diagnostic Laboratory, 67724384
Useful For
For identification of the HLA-B*5801 allele which is associated with Allopurinol-induced toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome (SJS), severe cutaneous adverse reactions (SCAR) or drug reaction with eosinophilia and systemic symptoms (DRESS).
Update
Last updated 15/06/2026
Processing Requirements
Specimen type: Whole Blood
Volume: 3.0 mL
Storage/transport requirements: Ambient or refrigerated