blood very low density lipoprotein cholesterol level 2011-11-03T03:16:59Z CMO:0000648 EFO:0008317 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 very low-density lipoprotein (VLDL) molecules in a specified volume of blood, the fluid that circulates through the heart, arteries, capillaries and veins carrying nutrients and oxygen to the body tissues and metabolites away from them. VLDL constitute a class of large (e.g. approximately 30-80 nm in diameter) lipoprotein particles, complex molecules that consist of a protein membrane surrounding a core of lipids. The VLDL class of lipoproteins has a density between 0.95 and 1.006 g/ml. VT:0005144 Values for density ranges of the lipoprotein classes are approximate. The classes may be defined differently by different researchers, in part because class definitions depend on the number of subclasses into which the lipoprotein fractions are divided. blood VLDL level blood VLDL-C level clinical_measurement_ontology mshimoyama very low density lipoprotein cholesterol measurement blood lipoprotein cholesterol level