Lab marker · Low

Low Apolipoprotein B (ApoB): what it means

A Apolipoprotein B (ApoB) result below the normal range is considered low. Here is what a reduced Apolipoprotein B (ApoB) can point to, and when it is worth discussing with a doctor.

Reference range: Desirable <90 mg/dL; <80 for high cardiovascular risk, <65 for very high risk; one ApoB per atherogenic particle

Understand your full result

What a low Apolipoprotein B (ApoB) can mean

  • Low cardiovascular risk — favourable.
  • Effective statin / ezetimibe / PCSK9 therapy — a treatment goal.
  • Very low levels — occasionally hyperthyroidism, malnutrition, or the rare genetic hypobetalipoproteinaemia.

When to discuss with a doctor

ApoB is most useful when standard lipids are ambiguous — high triglycerides, diabetes, metabolic syndrome, or a strong family history despite an 'okay' LDL-C. A high ApoB with a normal LDL-C means your risk is being underestimated and is a reason to intensify lifestyle and, with your doctor, consider lipid-lowering therapy to an ApoB target (broadly <90, <80, or <65 mg/dL by risk tier). It is also a clean way to confirm treatment is working. Mediora.AI shows ApoB alongside your full lipid panel and flags LDL-C/ApoB discordance; the treatment decision and cardiovascular risk scoring belong with your GP or cardiologist.

Conditions this can relate to

Keep reading

One value is a snapshot. Upload the full test to see every marker explained together.

Upload your test - free

Mediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.