Apolipoprotein B, Apo B Protein (Active)

Apolipoprotein B (ApoB) are the primary apolipoproteins of chylomicrons and low-density lipoproteins (LDL), which is responsible for carrying cholesterol to tissues. It is the primary apolipoprotein component, acts as a ligand for LDL receptors in various cells throughout the body. Through a mechanism that is not fully understood, high levels of ApoB can lead to plaques that cause vascular disease (atherosclerosis), leading to heart disease, the levels of ApoB are a better indicator of heart disease risk than total cholesterol or LDL.

Contois JH, Warnick GR, Sniderman AD (2011) . "Reliability of low-density lipoprotein cholesterol, non-high-density lipoprotein cholesterol, and apolipoprotein B measurement". JOURNAL OF CLINICAL LIPIDOLOGY 5 (4) : 264–272.