The normal range of apoA1 (i.e., apolipoprotein a1) varies slightly depending on gender, with a normal range of 1.25-1.59 g/L for men and 1.31-1.59 g/L for women. ApoA1 is an important structural protein of high-density lipoprotein (HDL), which has anti-atherosclerotic effects and is negatively correlated with the risk of coronary heart disease. The normal range of apoA1 is 1.25-1.59g/L in men and 1.31-1.59g/L in women. generally, women’s apoA1 levels are slightly higher than men’s. Elevated apoA1 is associated with an increased risk of coronary heart disease, and decreased apoA1 is seen in familial apoA1 deficiency, acute myocardial infarction, diabetes, and other diseases. ApoA1 can predict and evaluate the risk of coronary heart disease. If apoA1 is abnormal, it is necessary to go to a regular hospital in time to consult a professional doctor to formulate a treatment plan, so as not to delay treatment.