blood phospholipid level blood very low density lipoprotein phospholipid level 2013-05-08T13:06:06Z CMO:0001571 EFO:0022146 EFO:0022154 EFO:0022169 JSmith Measurement of the amount of phospholipid, any of various phosphorus-containing lipids that are composed mainly of fatty acids, a phosphate group, and a simple organic molecule such as glycerol, 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. 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 phospholipid level clinical_measurement_ontology phospholipids in large VLDL measurement phospholipids in medium VLDL measurement phospholipids in small VLDL measurement blood lipoprotein phospholipid level