Analysis of cholesterol in high density lipoprotein subfractions by high performance liquid chromatography.

We succeeded in the separation of human serum high density lipoprotein into their subfractions (HDL2 and HDL3) by high performance liquid chromatography with gel permeation columns (1, 2). The cholesterol contents in HDL2 and HDL3 for normal men and women (n = 42) and for the patients with atherosclerotic heart disease (n = 20) were measured by this separation method. The results in our experiment agree closely with those reported by other investigators using the ultracentrifugal method.