High ApoA1 may indicate high serum HDL levels, ApoA1 corresponds to HDL and their changes are generally in the same direction. Apo a1 is a type of apolipoprotein, which plays an important role in lipid metabolism and has functions such as facilitating lipid transport. Apo a1 is the main apolipoprotein of HDL, which is able to reverse cholesterol transportation, and has an anti-atherosclerotic effect. Therefore, high ApoA1 is generally normal and beneficial to the body. However, long-term alcohol abuse, use of contraceptives and other conditions may also increase the serum ApoA1 level, this situation needs to go to the hospital for examination of the cause of the disease, standardized treatment or change lifestyle habits.