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HLA B*58:01 Phenotype details

What HLA B*58:01 Phenotype shows

The phenotype result gives a plain interpretation of your HLA-B58:01 genotype, typically stating whether you are positive (a carrier) or negative. HLA-B is an immune system gene, and the B58:01 variant is linked to a higher risk of severe skin and hypersensitivity reactions, such as Stevens-Johnson syndrome, to allopurinol, a medicine used to lower uric acid in gout. Because it comes from your DNA, this is a lifelong result, not a level that changes. A positive result means increased risk rather than a certain reaction, and a negative result does not exclude one, so it is weighed by a prescriber alongside other factors.

Tests that include HLA B*58:01 Phenotype

Labcorp Not offered
Labcorp Not offered
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