No fasting required.

Apolipoprotein A-I (Apo-A1) is a structural and functional protein that constitutes approximately 70% of the protein in high density lipoprotein HDL.

They are proteins that bind to lipids to form lipoproteins. They help to transport the lipids through the lymphatic and circulatory systems. Their synthesis in the liver is controlled by a host of factors, including dietary composition, hormones (insulin, glucagon, thyroxin, estrogens, and androgens), alcohol intake, and various drugs (statins, niacin, and fibric acids).