Serology

One of the most common methods for diagnosing infectious diseases is serodiagnosis. This is a method in which antibodies of classes M and G in human serum indicate the presence of a specific antigen, i.e. about infection.\n\nThis method is based on the detection in serum or blood plasma of antibodies to pathogens, which are protective elements of the body's immune system. More than 35 classes of antibodies are known, but usually studies are conducted on the presence of two classes - M and G. Other classes of antibodies are also being studied, especially in the case of chronic diseases that may occur in several waves of disease. The antibody titer (the level of immune sera with a high antibody content) is also determined. Depending on the frequency of fluctuations (titer) of antibodies, the test results indicate a fresh disease, residual status (past infection), or a pathological process in the stage of recovery or relapse.\n\nAntibodies of each class can be formed without participation