LipidsUpdated 2025-12-24Medically Reviewed
Apolipoprotein B (ApoB)
Everything you need to know about Apolipoprotein B (ApoB) levels, including what normal ranges look like and what abnormal results might indicate.
Standard Reference Range
Unit: mg/dLMale Reference Range
<90 (optimal) mg/dL
Female Reference Range
<90 (optimal) mg/dL
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Reference ranges may vary slightly between laboratories. Always consult your doctor for interpretation.
What is ApoB?
ApoB is the structural protein on all atherogenic lipoproteins (LDL, VLDL, IDL, Lp(a)). Each particle has one ApoB, so ApoB approximates particle number.
Key Takeaway
ApoB correlates with cardiovascular risk better than LDL in patients with high triglycerides or metabolic syndrome.
Why is this test performed?
- Refine cardiovascular risk beyond LDL-C
- Guide therapy in metabolic syndrome or diabetes
- Monitor response to lipid-lowering treatment
Interpreting Your Results
- Optimal ＜90, borderline 90–109, high ≥110; very high risk targets may be ＜65
Related Tests
- LDL / Non-HDL: Traditional lipid goals
- Triglycerides / HDL: Context for particle composition
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