plasma intermediate density lipoprotein cholesterol level +
This is a measurement of the amount of cholesterol, a eukaryotic sterol that in higher animals is the precursor of bile acids and steroid hormones and a key constituent of cell membranes, carried in intermediate-density lipoprotein (IDL) molecules in a specified volume of plasma, the fibrinogen-containing fluid portion of the blood in which the particulate components are suspended. IDL are relatively large lipoprotein particles (complexes that consist of protein surrounding a core of lipids) formed by degradation of very low density lipoproteins (VLDL) particles and thus having a size intermediate between those of VLDL and low density lipoproteins. The IDL class of lipoproteins is defined as having a density between 1.006 and 1.019 g/ml.
plasma low density lipoprotein cholesterol level +
plasma total cholesterol level
plasma very low density lipoprotein cholesterol level +
serum intermediate density lipoprotein cholesterol level