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A1b Blood Test Overview
Apolipoproteins are proteins that attach to the lipids to transport the cholesterol through the blood. Two types of Apolipoproteins are mainly measured, Apolipoprotein A and Apolipoprotein B. Apolipoprotein A is mainly attached to HDL (good cholesterol) and mainly helps to eliminate the bad cholesterol from the blood. Apolipoprotein B attaches to LDL (bad cholesterol) and contributes to heart diseases by leading to formation of plaques or clogging of arteries.
Apolipoprotein B (ApoB) and Apolipoprotein A1 (ApoA1) are two forms of apolipoproteins (proteins found in lipoproteins) that transport fats like cholesterol in the blood.
ApoB, also known as beta-lipoprotein, is mostly found in low-density lipoproteins (LDL). It is often known as "bad cholesterol" because high LDL cholesterol levels are linked with a higher risk of heart disease.
ApoA1, also known as alpha-lipoprotein, is predominantly found in high-density lipoproteins (HDL). It is sometimes referred to as "good cholesterol" because high levels of HDL cholesterol in the blood are associated with a lower risk of heart disease.
Who requires Apolipoprotein B/A1 (ApoB/A1) test?
- Individuals who are at risk for heart diseases such as those with high cholesterol or a family history of heart disease.
- Patients with a medical history of heart diseases, such as a heart attack or stroke.
- Patients suffering from metabolic disorders such as diabetes mellitus or obesity.
- Patients taking lipid-lowering medications such as statins or fibrates.
- Testing for liver disease or metabolic disorders.
- Monitoring lipid levels after making lifestyle changes or receiving treatment for lipid disorders.
Written by: Dr.Shibani R, Medical Writer, Medical Affairs
Apolipoproteins B/A1 Price
Metropolis Healthcare is a leading diagnostics centre and pathology lab in India equipped with the latest state-of-the-art technologies that provides the Apolipoproteins B/A1 with a clear pricing structure.
The Apolipoproteins B/A1 Price in Mumbai is ₹ 1,100 .
We are committed to deliver accurate and quality results from the best labs in India with complete transparency regarding test cost and turnaround time. No matter where you are, we strive to offer patients high-quality service that is affordable and accessible.
Frequently Asked Questions
a1b blood test can help predict cardiovascular risk in patients. It gives a more detailed idea of the risk of heart diseases than the routine cholesterol screening. Test can be advised under the following conditions:
- Family history of early age heart diseases.
The test can help people forecast their risk of having a heart attack. Even in people with normal cholesterol levels, heart attacks and strokes occur frequently. This could be caused by a sudden burst of plaque (atherosclerosis) that has developed over time. In such cases, the Apolipoprotein B/A1 ratio can be used as a biomarker to predict the risk of coronary artery disease or stroke. A high ratio is linked to an increased risk of cardiovascular disease.
This test is done at regular intervals, such as annually or every few years, as part of a routine check-up or screening for heart diseases.
The test is advised under the following circumstances:
- A family history of heart disease at a young age.
- High LDL levels despite treatment.
- Family history of hypercholesterolemia.
- A personal history of cardiac illness, with or without surgery.
- To identify Apo-A1 and Apo-B deficits that may be hereditary.
- Screening for heart diseases since people with normal triglyceride and total cholesterol levels may present with a heart attack or stroke.
a1b blood test measures Apo-B/Apo-A ratio in blood
It measures the levels of Apolipoprotein A1, Apolipoprotein B and Apo-B/Apo-A1 ratio in the bloodstream.
During a1b blood test blood sample is taken from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
High levels of Apo A may reduce the risk of heart diseases, strokes and peripheral vascular disorders. Low levels may increase the risk of heart attacks and stroke. Low levels may also occur due to certain inherited apolipoprotein deficiencies. High levels of Apo B can lead to cholesterol being deposited in the arterial walls which causes thickening or clogging of the arterial walls also known as "artherosclerosis". This disrupts the flow of blood to the heart and other vital organs. This increases the risk of heart diseases, strokes, and other peripheral arterial diseases. Low levels may mean reduced risk of heart diseases. Low levels may also occur due to Apo-B deficiencies as seen in Tangier's disease or fish eye disease. High B/A1 ratio increases the risk of heart diseases. Low ratio may reduce the risk of cardiac diseases and stroke. Apo-B/A1 ratio is a more specific test that gives a clearer picture of the risk of heart diseases as compared to routine cholesterol tests.
Individuals with the following risk factors are usually recommended ApoB/A1 test.
- High blood levels of "bad" LDL cholesterol
- Family history of cardiovascular disease
- Smoking history.
- Hypertension (high blood pressure)
- Diabetes mellitus
- Sedentary way of life
No specific preparations are required for the Apolipoprotein B/A1 (ApoB/A1) test.
The test cannot diagnose heart disease on its own, but it can be used in conjunction with other tests and a person's overall health history to determine the risk of developing heart disease.
Some tests that are done in conjunction with an Apolipoprotein B/A1 (ApoB/A1) test include:
- Lipid panel: It measures the levels of total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides in the blood.
- LDL cholesterol
- HDL cholesterol
- Cardiac markers: These measure specific proteins or enzymes in the blood that can indicate the presence of cardiac injury.
- Other tests - HbA1c, glucose, insulin, c-reactive protein, and creatinine.
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