Apo B compared with Apo A-I
Biomarker library
Heart Health
Apolipoprotein B / A-I ratio
The ApoB/ApoA-I ratio compares the number of particles that can clog arteries (ApoB) with the main protein of protective HDL (ApoA-I).
Measured in your health assessment, with a doctor to explain your result. Book yours
Why it matters
In the INTERHEART study of heart attacks across 52 countries, this ratio was the strongest single blood marker of risk, ahead of the traditional cholesterol measures.
What a result can mean
Lower than the range
A lower ratio is favourable, with relatively more HDL protein than artery-clogging particles.
Higher than the range
A higher ratio means the balance is tipped towards artery-clogging particles, typically from a high LDL or ApoB, a low HDL, or both.
What can help
Lowering ApoB, through diet, weight, activity and, where risk is high, medicines, has the biggest effect; exercise and not smoking support ApoA-I.
Read it with
NoteGeneral educational illustration. Colours, sizes and movement are simplified. This is not a scan or a simulation of your body. General information, not personal medical advice: a doctor reads your own results with your history.
Know your Apolipoprotein B / A-I ratio.
Measured in your health assessment and explained by the doctor who reviews your results.