Pathologic material (mucosal excretion from the nasal passages) obtained from a patient provisionally diagnosed with influenza was delivered to the virological laboratory. What quick test allows detecting specific viral antigen in the investigated material?

Answer options

1. Radioimmunoassay (RIA)
2. Hemagglutination inhibition assay (HAI)
3. Reverse indirect haemagglutination (RI-HA)
4. Direct and indirect immunofluorescence (IF)
5. Direct and indirect enzyme-linked immunosorbent assay (ELISA)

Explanation

Serology - Immunofluorescence assay (IFA) IFA to detect specific antibody, antigen, or virus offers a simple, convenient, and quick test, but is not quantitative