Virus Neutralization Assay

**Semantic type:** Laboratory Procedure

**Definition:** An in vitro assay that is used to determine whether antibodies that can block viral infection are present in a biological specimen. Virus is mixed with serum taken from the subject and is incubated in culture with laboratory cells, which are monitored over time for cytotoxicity.

**Synonyms:** - MICRONEUTRALIZATION ASSAY - VNA