This result signifies that the patient has one copy of a normal function allele and one copy of a no function allele OR one copy of a normal function allele and one copy of a decreased function allele OR one copy of an increased function allele and one copy of a no function allele OR one copy of an increased function allele and one copy of a decreased function allele. Based on the genotype result this patient is predicted to be an intermediate metabolizer of CYP2B6 substrates. This patient may be at risk for an adverse or poor response to medications that are metabolized by CYP2B6. To avoid an untoward drug response, dose adjustments or alternative therapeutic agents may be necessary for medications metabolized by CYP2B6. Please consult a clinical pharmacist for more information about how CYP2B6 metabolic status influences drug selection and dosing.