Alpha globulin range is 0.2-0.3 g/L and optimal beta globulin range is 0.7-1.0 g/L. The level of globulins can increase or fall below the optimal range. The level of globulins can increase or fall below the optimal range.. β 2 microglobulin also known as B2M is a component of MHC class I molecules, MHC class I molecules have α 1, α 2, and α 3 proteins which are present on all nucleated cells (excludes red blood cells).. Lisa, The beta globulin is one of the values reported from a test called protein electrophoresis, which can be run on the blood (called serum protein electrophoresis - SPEP) or the urine (UPEP).. Ideally, albumin levels will fall at 4.5-5/ 100 ml, alpha globulin levels will stay at.2 -.3 g/L and beta globulin levels will fall at.7-1.0 g/L. Low Globulin Levels . If the globulin levels fall below this normal range it can be a sign of numerous serious health conditions.. Beta 2 micro globulin is a component molecule of the cells in the human body. Its levels tend to be elevated when a person is suffering from a particular type of cancer.. The four major groups of globulin are gamma, beta, alpha-2 and alpha-1 globulins. To determine the excess or deficit levels of globulin, the abnormal group has to be detected. The gamma globulins form the largest portion of the globulins, therefore, low globulin levels straightaway indicate antibody deficiency..