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The APOB/A1 ratio is considered by some researchers and healthcare professionals as a more accurate indicator of cardiovascular risk compared to traditional cholesterol measurements, such as LDL cholesterol or total cholesterol. An elevated APOB/A1 ratio may suggest an imbalance between atherogenic (artery-clogging) and anti-atherogenic (artery-protective) lipoproteins, which could indicate an increased risk of developing cardiovascular disease.

By measuring the APOB/A1 ratio, healthcare professionals may gain additional insights into a person's cardiovascular risk profile, potentially helping in the assessment and management of cardiovascular disease.

What we test

Apolipoprotein Ratio

The apo B/apo A1 ratio indicates the cholesterol balance between potentially atherogenic (bad) and anti-atherogenic (good) particles. For men this should be below 0.9 and for women it should be below 0.8.

This blood test measures:

Apo A is a protein carried in HDL ("good") cholesterol. It helps start the process for HDL to remove bad types of cholesterol from your body. In this way, apolipoprotein A can help to lower your risk for cardiovascular disease.

Apo B containing lipoproteins are the ones most likely to enter the wall of the arteries. They are capable of trafficking cholesterol into the artery wall, and if present in increased numbers may be the main initiating factor in atherosclerosis.

The apo B/apo A-I ratio indicates the cholesterol balance between potentially atherogenic (bad) and antiatherogenic (good) particles. The ratio is strongly related to risk of cardiovascular disease. For men the ratio should be 0.9 or under and for women it is 0.8 or under.

Test instructions

Fast from all food and drink other than water for at least 8 hours, and no more than 12 hours prior to your test.

Download and print your pathology form from your i-screen dashboard.

Take your form to your local collection centre to have your sample taken - no need for an appointment.

Results for this test available in 2-4 weeks depending on region and will be published in your online dashboard.

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