This result signifies that the patient has two copies of a normal function allele. Based on the genotype result, this patient is predicted to have normal ABCG2 function. This means that there is no reason to adjust the dose of most medications that are affected by ABCG2 on the basis of ABCG2 genetic status. Please consult a clinical pharmacist for more specific information about how ABCG2 function influences drug dosing.