“…Several nations are screening different IEMs according to their prevalence in that population [83,84] as presented in Table 3 with three most prevalent groups of disorders. In our country (Pakistan), there is no newborn screening program yet available for the screening of inherited metabolic disorders, hence we are making efforts to establish NBS in our country, [9,42,45,62,[85][86][87][88][89] although scarce data are available on such disorders in Pakistan. [9,62,[85][86][87][88][90][91][92][93][94] On the other hand, reports from Pakistan show that burden of inherited disorders is quite high due to consanguinity, hence there is a dire need to develop a NBS program, which can help to minimize the burden of such disorders from the society especially focus on aminoacidopathies, organic acidemias, and fatty acid oxidation disorders.…”