1. In a retrospective cohort study, the distribution of low density lipoprotein cholesterol (LDL-C) and apolipoprotein B (ApoB) levels obtained from dried blood spots of newborns may be useful for newborn screening of familial hypercholesterolemia. 2. Total cholesterol, LDL-C, and ApoB were observed in highest concentrations during winter months. Evidence Rating Level: 2 (Good) Study