Apolipoprotein A (apo A) tests measure the amount of apolipoprotein A in your blood to help determine your risk of cardiovascular disease (CVD). Apolipoprotein A is a protein in high-density lipoprotein (HDL), or "good" cholesterol, that helps remove "bad" cholesterol from your body.
 
Synonyms
A-1 Apolipoprotein
Alpha-Apolipoprotein