This test is usually part of a regular check up. It measures the level of protein in your blood. Proteins in your blood are made in your liver by your immune system. There are different types of proteins in your blood and they are called globulins. Globulin tests can diagnose liver damage, kidney disease, autoimmune disorders and certain types of cancers. Nutritional problems can be found as well. The Total protein test measures the amount of globulins and albumin. The serum protein electophoresis test measures each type of protein and provides more specifc information about how well your immune system is working.