Apolipoprotein B (Ap)
The Apolipoprotein B (Apo B) test measures the level of Apo B, a key protein found in low-density lipoproteins (LDL or “bad cholesterol”) and other atherogenic particles in the blood. Each LDL particle contains one Apo B molecule, making this test a reliable indicator of the number of harmful cholesterol particles circulating in the bloodstream.
Elevated Apo B levels are associated with an increased risk of cardiovascular diseases such as atherosclerosis, heart attack, and stroke. It provides a more precise assessment of heart risk compared to traditional LDL cholesterol levels alone. This test is often recommended for individuals with diabetes, obesity, metabolic syndrome, or a family history of heart disease.
The Apo B test is simple and requires a small blood sample. Accurate results help doctors better assess cardiovascular risk, monitor treatment, and guide lifestyle and medication strategies for improving heart health.