For warfarin, a widely prescribed drug used to prevent blood clots, genotyping can guide the right dose and hasten the time it takes to get to steady state. Genotyping can also predict severe liver toxicity for drugs such as flucloxacillin or lumiricoxib.
通过基因类型测定预知疗效的例子还有很多。 对广泛用于抗血液凝结的处方药华法令，基因类型测定可以引导患者服用正确的剂量，并缩短进入稳定期所需的时间。 基因类型测定也可以提前预知氟氯西林或罗美昔布等药物是否会产生严重的肝脏毒性。