Apo b 1.37 should refer to a serum apo b level of 1.37 g/L, which is a mild elevation and is usually not considered serious. Normal serum ApoB levels range from 0.8-1.22 g/L in men and 0.84-1.30 g/L in women, so a serum ApoB level of 1.37 g/L should be considered mildly elevated and not in the serious range. Apo b can directly reflect the level of LDL, and its increase is related to the occurrence of atherosclerosis and coronary heart disease, and has been used to evaluate the risk of coronary heart disease and the effect of lipid lowering. When the serum ApoB level is elevated, it is necessary to be alert to the risk of the above mentioned diseases, and it is recommended that prevention and treatment be carried out under the guidance of specialized physicians. In summary, ApoB 1.37g/L is considered mildly elevated, and prompt medical attention is needed.