Plasma Lipoprotein Lipase Activity in Primary Type IV Hyperlipoproteinaemia

Lipoprotein lipase activity has been measured in both pre- and post-heparin plasma samples from 6 patients with Primary Type IV hyperlipoproteinaemia and from 6 normal subjects. Post-heparin lipoprotein lipase activity was of the same order in plasma from both groups. Appreciable activity was, however, noted in plasma collected from the Type IV patients prior to administration of heparin. Lipase activity was minimal in such samples from normal individuals.