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HLA B*57:01 Phenotype details

What HLA B*57:01 Phenotype shows

The phenotype result gives a plain interpretation of your HLA-B57:01 genotype, typically stating whether you are positive (a carrier) or negative. HLA-B is an immune system gene, and the B57:01 variant is strongly linked to a hypersensitivity reaction to abacavir, a medicine used to treat HIV. Because it comes from your DNA, this is a lifelong result, not a level that changes. A positive result indicates a much higher risk of this reaction, which is why the variant is checked before abacavir is prescribed. A negative result lowers the risk but does not remove it entirely, so it is used alongside clinical judgment.

Tests that include HLA B*57:01 Phenotype

Labcorp Not offered
Labcorp Not offered
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