Apolipoprotein (Apo) tests are a type of blood test that measures the levels of apolipoprotein proteins in the blood. Apolipoproteins are proteins that are part of lipoproteins, which are particles that carry cholesterol and other lipids in the blood. There are several types of apolipoproteins, including ApoA, ApoB, ApoC, and ApoE.
The Apo-B test measures the level of apolipoprotein B in the blood, a protein found on LDL cholesterol particles. Elevated levels are linked to cardiovascular disease risk due to increased LDL particles that can lead to artery plaque. The test is used alongside lipid tests to assess heart disease risk and guide treatment decisions, especially for individuals with family history or risk factors.
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