A serum immunofixation test measures specific proteins in your blood. It helps to identify certain illnesses that are otherwise hard to detect, such as multiple myeloma, a blood cancer. The test is ...

An A/G ratio is a blood test that compares the amount of albumin and globulin in your blood. A normal A/G ratio is between 1.1 and 2.5. A low A/G ratio may be due to kidney disease, liver disease, ...

One of the newest and most hopeful weapons in the fight against polio is a blood fraction called gamma globulin. Doctors have known for several years that it is a rich storehouse of disease-fighting ...