Sib-pair linkage analysis was used to screen a large pedigree, ascertained through four members with hypercholesterolemia, for evidence of linkage between 12 quantitative traits and 15 genetic marker loci. Traits were analyzed on the untransformed, natural log and square root-transformed scales. After adjusting for multiple tests, there is a suggestion of linkage between height and the Kidd blood group on chromosome 18 and between VLDL cholesterol, and possibly triglyceride, and KM on chromosome 2.