IgM antibodies are mostly present in blood and lymph fluid; they are the first antibodies produced by the body when it encounters...

An IgA test examines the level of immunoglobulin A in the blood, which is one of the most prevalent antibodies in the body.

A class of antibodies (immune proteins) called immunoglobulin E (IgE) causes allergic responses. It is present in the blood in extremely tiny levels.

IgG antibodies are detected by this test. IgG is by far the most prevalent kind of antigen. In the blood and other bodily fluids, it defends...