Total cholesterol 6.66 mmol/L is the value of total cholesterol in serum lipid test. Cholesterol, triacylglycerols, free fatty acids and other substances are detected during the serum lipid test, which is helpful for the diagnosis of lipid metabolism disorders and related diseases. A total cholesterol of 6.66 is a serum lipid test value of 6.66 mmol/L. The appropriate level of total cholesterol is usually less than 6.66 mmol/L. Usually, the appropriate level of total cholesterol is less than 5.20mmol/L, and the borderline level is between 5.2 and 6.20mmol/L, while more than 6.20mmol/L is at the elevated level, so the total cholesterol of 6.66mmol/L is at the elevated level. Clinically, total cholesterol is at elevated level, which may be related to long-term smoking, alcohol consumption, blood concentration, large amount of high cholesterol and high-fat food, and also does not exclude coronary artery atherosclerosis, various kinds of hyperlipoproteinemia, cholestatic jaundice, application of glucocorticoids and other factors, and it is recommended to consult a doctor for treatment in a timely manner. Usually after the total cholesterol is elevated, mainly more than 6.20mmol/L, in the low cholesterol light diet at the same time, you can choose statin, resin lipid-lowering drugs for treatment, such as simvastatin, kolestyramine and other drugs. After taking ezetimibe can reduce the intestinal reabsorption of cholesterol, so as to achieve the effect of lowering total cholesterol. If the total cholesterol is 6.66mmol/L when serum lipid test is performed again, it is recommended to consult the doctor in time and lower the lipid therapy after the doctor combines the conditions.