Apolipoprotein B (ApoB) – Apolipoprotein B (ApoB) is a protein on every cholesterol particle that can drive plaque in your arteries. One ApoB sits on each atherogenic particle, so ApoB counts those particles directly.
What Apolipoprotein B measures
Apolipoprotein B measures the total number of cholesterol-carrying particles that can lodge in artery walls (LDL, VLDL, and related). Because it counts particles rather than the cholesterol inside them, it can reveal risk that a standard LDL number misses.
Typical ranges
Optimal is often cited below about 90 mg/dL, with lower targets (under ~65-80 mg/dL) for people at higher cardiovascular risk. Targets vary by individual risk. Reference ranges differ between laboratories and by age and sex, so always read your result against the range printed on your own report.
What high results can mean
More particles that can enter the artery wall, and higher cardiovascular risk – even if LDL cholesterol looks normal.
What low results can mean
Fewer atherogenic particles, generally associated with lower cardiovascular risk.
How the test is done
A blood sample; fasting is not required for ApoB alone. At-home collection works well for this marker when the sample is processed by a certified lab.
FAQ
What is a normal Apolipoprotein B level?
Optimal is often cited below about 90 mg/dL, with lower targets (under ~65-80 mg/dL) for people at higher cardiovascular risk. Targets vary by individual risk. Your ideal target depends on your age, sex, and health history, so review results with a clinician.
What does a high Apolipoprotein B result mean?
More particles that can enter the artery wall, and higher cardiovascular risk – even if LDL cholesterol looks normal.
Can I test Apolipoprotein B at home?
Yes. A blood sample; fasting is not required for ApoB alone. An at-home sample processed by a certified lab gives reliable results.
This article is educational and not a substitute for medical advice. Discuss your results with a qualified clinician.