ApoB (Apolipoprotein B)

ApoB, or Apolipoprotein B, is a protein that plays a crucial role in the body's lipid metabolism. It is a key component of lipoproteins, which transport fats, including cholesterol, through the bloodstream. There are two main forms: ApoB-100, found in low-density lipoprotein (LDL), often referred to as "bad cholesterol," and ApoB-48, found in chylomicrons that transport dietary fats. Measuring ApoB levels can help assess heart disease risk, as higher levels can indicate an increased likelihood of plaque buildup in arteries, which can lead to heart attacks or strokes.