What does it mean when high-density lipoprotein (HDL) levels are elevated?

High-density lipoprotein (HDL) elevation typically refers to levels of high-density lipoprotein cholesterol (HDL-C) in the blood exceeding the normal range. In lipid profile tests, the reference range for HDL-C is generally 1.04 mmol/L to 1.55 mmol/L, and a measured value above 1.55 mmol/L is considered elevated. Elevated HDL levels may also be associated with certain pathological factors, such as chronic liver disease, primary biliary cholangitis, and other conditions involving liver dysfunction, as well as an increased risk of cardiovascular diseases such as atherosclerosis and coronary artery disease. When high HDL levels are detected, further testing and evaluation should be conducted according to a physician's recommendations to determine whether any underlying health issues are present.