由遗传因素决定的某些药物在体内代谢存在种族和个体差异。如乙酰化代谢,在人群中呈现的多型性,即有快、中、慢三型之分。代谢快者,血药浓度较低;代谢慢者,血药浓度较高。显然,某些药物在体内的乙酰化代谢的快慢直接决定着药物的疗效和毒性大小。因此,在临床给药之前,确定病人乃至一个民族的代 There are racial and individual differences in the metabolism of certain drugs that are determined by genetic factors. Such as acetylation metabolism, in the crowd showed polymorphism, that is, fast, medium and slow three types of points. Fast metabolism, lower blood concentration; slow metabolism, high blood concentration. Obviously, some drugs in the body of acetylation metabolism directly determines the speed of the drug efficacy and toxicity. Therefore, before the clinical administration, to determine the patient and even a nation’s behalf