plasma low-density lipoprotein phospholipid measurement test
serum low-density lipoprotein phospholipid measurement test
A laboratory test which measures the amount of phospholipid (phosphorus-containing lipids composed mainly of fatty acids, a phosphate group, and a simple organic molecule) found in the low-density lipoprotein (LDL) fraction of serum, the clear liquid that separates from blood after it has clotted completely, i.e. blood plasma from which fibrinogen has been removed. LDL consitute a class of relatively large (diameter approximately 18-28 nm), heterogeneous lipoprotein particles, complexes that consist of a protein layer surrounding a core of lipids.