LDL Cholesterol (Beta-Quantification), Serum
Method Description Describes how the test is performed and provides a method-specific reference
Ultracentrifugation is performed to remove chylomicrons and very low-density lipoproteins present in the supernatant. Separation of low-density lipoprotein particles is achieved via selective precipitation from high-density lipoprotein. Cholesterol is quantitated by an enzymatic, colorometric method.(Ellefson RD, LR, Hodgson PA, Weidman, WH: Cholesterol and triglycerides in serum lipoproteins of young persons in Rochester, Minnesota. Mayo Clinic Proc 1978;53:307-320; Warnick GR, Benderson J, Albers JJ: Dextran sulfate-Mg2+precipitation procedure for quantitation of high-density-lipoprotein cholesterol. Clin Chem 1982;28:1379-1388)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Thursday, Saturday; 3 p.m.