Lipoprotein A 600mg/L is more serious. Lipoprotein A is synthesized in the liver and prevents the dissolution of blood clots in blood vessels, which is very important for maintaining the health of blood vessels. Under normal circumstances, the normal value of lipoprotein A is 0-300mg/L. If lipoprotein is elevated, it may promote the formation of atherosclerosis, so when lipoprotein A is 600mg/L, it is very likely to lead to myocardial infarction, stroke, familial hypercholesterolemia, diabetes mellitus, aneurysm, and some cancers and other diseases. Therefore, lipoprotein A 600mg/L is serious and should be treated promptly. When lipoprotein A is elevated, it is necessary to pay attention to a light diet and go to the hospital for regular checkups.