Which Class of Antibody is Indicative of a Recent Infection

Question

Which class of antibody is indicative of a recent infection?
A)IgG.
B)IgA.
C)IgM.
D)IgD.
E)IgE.

Accepted Answer

IgM is the class of antibody that is indicative of a recent infection. It is the first antibody to be produced in response to an infection and is important in the early stages of the immune response. IgG, IgA, IgD and IgE are also classes of antibodies, but they are not as useful in determining a recent infection.