Cardiovascular Disease and Apo A-Apo B Testing
Cardiovascular disease is one of the leading causes of death and is common worldwide. Recent research has found that testing Apolipoprotein B (Apo B), a lipid–protein component involved in transporting fats through the bloodstream to different tissues, together with an LDL blood test may help assess cardiovascular risk more effectively than testing LDL alone.
Each atherogenic lipoprotein particle that may accumulate in the blood vessels-including VLDL, IDL, and LDL-contains one Apo B molecule. Therefore, the Apo B level may better reflect the number of lipid particles associated with cardiovascular risk.
This is particularly important in some patients whose LDL level is within the normal range but whose Apo B level is elevated. A high Apo B level may indicate an increased number of lipid particles that can accumulate in the arteries and raise the risk of cardiovascular disease.
In addition, the ratio of Apo B to Apo A (Apo B:Apo A) may be used as another indicator of cardiovascular risk. Apo A helps transport cholesterol back to the liver and may help reduce the accumulation of fat in the blood vessels.
Apo A is a lipid–protein component found in HDL. Its level generally rises and falls in the same direction as the HDL level.
Therefore, measuring Apo B may provide a more effective method of predicting cardiovascular risk because it may indicate risk more accurately than LDL alone. Apo B results may also help doctors develop an appropriate treatment plan to reduce the risk of cardiovascular disease.
Measurement of Apolipoprotein A-I and Apolipoprotein B
Apolipoprotein A-I and Apolipoprotein B are measured using an immunoturbidimetric assay.
This method measures the turbidity of immune complexes formed when the Apo B antigen in the blood binds to the Apo B antibody contained in the testing reagent. The test is performed using an automated analyser.
The result is reported numerically in mg/dL, making it suitable for supporting risk assessment and treatment planning.
Reference :
N Health
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