1. the LDL components under the Schlieren peaks of Sf 4-8 were of main contribution to the increase in total serum LDL concentration in various hepatobiliary disorders. Except for in some special occasions, the ultracentrifugal analysis did not uncover major qualitative changes. 2. When there was marked increase in the ratio of other LDL components than those under Sf 4-8 peaks, there always was simultaneous increase in both Schlieren peaks of Sf lower than 4 and of higher than 8. 3. There was marked variety in the complex LDL Schlieren profiles containing minor peaks of ususual Sf values…