Fluorescent Antibody Virus Neutralization Assay

**Semantic type:** Laboratory Procedure

**Definition:** An immunofluorescence assay method that measures the level of virus-specific neutralizing antibodies in a serum or a plasma sample by the detection of fluorescence in susceptible cells incubated with serial dilutions of the serum/plasma and fluorophore-conjugated virus.

**Synonyms:** - FAVN - FLUORESCENT ANTIBODY VIRUS NEUTRALIZATION ASSAY