Cholesterol 6.26mmol/L is high. Reference range of cholesterol: less than 5.20mmol/L is an appropriate level, 5.23-5.69mmol/L is a borderline level, and greater than 5.72mmol/L is elevated. Elevated cholesterol is commonly found in cardiovascular and cerebrovascular diseases caused by atherosclerosis, hyperlipoproteinemia, cholestatic jaundice, hypothyroidism, lipoid nephropathy, nephrotic syndrome, diabetes mellitus, prolonged smoking, alcohol consumption, stress, blood concentration, and the use of certain drugs. Cholesterol 6.26mmol / L please go to the hospital in time to find out the cause of the disease and targeted treatment, do not blindly use drugs to avoid delaying the condition.