Precipitation Tests Precipitation Soluble Ab Immunodiffusion

Agglutination Tests Agglutination ____________ Ag plus Ab cause clumping Easy to perform and read Indirect agglutination tests Place Ab or AG on artificial particles Latex spheres Clay particles

Complement Fixation Ab/Ag complex competition

Neutralization Ab binds a toxin active site or viral binding site during incubation, neutralizing cell-damaging effects The mix is placed over a cell layer in culture Absence of cytotoxic effects in culture indicates correct diagnosis

Immunofluoroescence

ELISA Tests Enzyme Linked ImmunoSorbent Assay Enzymatic color reaction is stimulated when productive Ab/Ag binding occurs ______________ indicates correct diagnosis