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McMaster Textbook of Internal Medicine

Apolipoprotein A1 (ApoA1)

How to Cite This Chapter: Don-Wauchope A, Chetty VT, Ivica J, Kavsak P, Khan WI, Lafreniere M, Nouri K, Solnica B. Apolipoprotein A1 (ApoA1). McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.1269.3.7.173. Accessed December 05, 2025.
Last Reviewed: May 9, 2022
Last Updated: May 9, 2022
Chapter Information

For a brief introduction and guide to abbreviations, see Laboratory Tests: General Remarks.

Analyte [material]

Apolipoprotein A1 (ApoA1) [S/P]

Reference range, target level, or decision threshold

>125 mg/dL!!!

Age-specific and sex-specific reference intervals. The ratio of ApoB/ApoA1 is important for cardiovascular risk calculation.

Interpretation of results

↓ Atherogenic dyslipidemia, familial hypoalphalipoproteinemia, Tangier disease, familial lecithin-cholesterol acyltransferase (LCAT) deficiency, fish-eye disease

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