This result signifies that this patient has [1 copy of a normal function allele (*_)] or [2 copies of a decreased function allele with an activity value of 0.5 (*_x2)] and [1 copy of a decreased function allele with an activity value of 0.25 (*_)] OR *41x3 and [1 copy of a decreased function allele with an activity value of 0.5 (*_)] or [2 copies of a decreased function allele with an activity value of 0.25 (*_x2)]. Based on the genotype result this patient is predicted to be a normal metabolizer of CYP2D6 substrates. There is no reason to selectively adjust the dose of most medications that are metabolized by CYP2D6. Please consult a clinical pharmacist for more information about how CYP2D6 metabolic status influences drug selection and dosing.