Immunological tests may determine the presence of
A)only antibody.
B)only antigen.
C)antigen or antibody.
D)neither antibody nor antigen.

Question

Quizplus · Accepted Answer

Immunological tests such as ELISA or RIA can detect either antigen or antibody. ELISA detects the presence of antigens (such as proteins from a virus or bacteria) in a sample by using specific antibodies that bind to the antigen. RIA detects the presence of specific antibodies in a sample by using radioactively labeled antigens that bind to the antibodies. Therefore, the correct answer is C because immunological tests can determine the presence of either antigen or antibody.

Immunological Tests May Determine the Presence of