Purity ≥95% of total lipoprotein content by electrophoresis. Prepared by sequential flotation ultracentrifugation technique using KBr for density adjustments. Single arc by IEP against antisera to whole human serum. Essentially free from other plasma lipoproteins as determined by electrophoresis using Fast Red 7B staining for lipids and Coomassie Blue for proteins. Purity: ≥95% of total lipoprotein content by electrophoresis. Prepared by sequential flotation ultracentrifugation technique using KBr for density adjustments. Single arc by IEP against antisera to whole human serum. Essentially free from other plasma lipoproteins as determined by electrophoresis using Fast Red 7B staining for lipids and Coomassie Blue for proteins.