Apolipoprotein A1 (ApoA1)
Heart & circulation markersWhat the test generally measures, and what to ask about it.
Longetic keeps every lab and record you’ve had organized and easy to find, so your own Apolipoprotein A1 (ApoA1) values sit together on one chart and you walk into your next appointment prepared.
What is Apolipoprotein A1 (ApoA1)?
The main protein that gives HDL (the good cholesterol) its structure and helps carry cholesterol away from the arteries.
Apolipoprotein A1 is the key building-block protein of HDL cholesterol, and it helps the body move excess cholesterol back to the liver for removal. Higher ApoA1 tends to travel with higher HDL and can be associated with a more favorable cholesterol picture, while lower levels can be associated with a less protective profile. It is an extended lipid marker sometimes added when a standard cholesterol panel needs a closer look, rather than being a routine test.
This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Terms of Use.
References
About our sources
Official sources
Government health agencies, national institutes, and intergovernmental bodies whose guidelines carry regulatory or policy weight.
Clinical / professional
Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.
Peer-reviewed research
Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.