Apolipoprotein B
Apolipoprotein B (Apo B) is the main protein found on LDL and VLDL cholesterol particles. Each atherogenic lipoprotein particle contains one Apo B molecule, making it a direct measure of the number o…
Category: lipids
Also known as: apolipoprotein b, apo b, apob, apo-b
Reference range: 0–100 mg/dL (Source: ABIM)
Standard unit: mg/dL
High values may indicate
High Apo B levels may indicate increased risk of cardiovascular disease, atherosclerosis, familial hypercholesterolemia, or metabolic syndrome.
Low values may indicate
Low Apo B levels are generally favorable and may reflect effective lipid-lowering therapy, though very low levels may be associated with hypobetalipoproteinemia or liver disease.
Frequently asked questions
- What is a normal Apolipoprotein B level?
- A typical reference range for Apolipoprotein B is 0–100 mg/dL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Apolipoprotein B measured in?
- Apolipoprotein B is most commonly reported in mg/dL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Apolipoprotein B reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Apolipoprotein B over time?
- Yes. Upload results from any lab and BloodId charts your Apolipoprotein B over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
Analyze your Apolipoprotein B with AI