The SARS-CoV-2 Neutralizing Antibody Rapid Test Cassette (Whole Blood/Serum/Plasma) is a rapid immunochromatographic test designed for the qualitative detection of neutralizing antibodies against SARS-CoV-2 that block the interaction between the domain that binds the viral spike glycoprotein receptor (RBD) and cell surface receptor ACE2 in human serum, plasma or whole blood. It is intended to be used as an aid in the identification of individuals with an adaptive immune response to SARS-CoV-2. This test should not be used to diagnose acute SARS-CoV-2 infection. The results indicate the detection of neutralizing SARS-CoV-2 antibodies. Positive results indicate the presence of neutralizing SARS-CoV-2 antibodies. The new coronaviruses belong to the β genus. COVID-19 is an acute respiratory infectious disease. It mainly affects humans. Patients infected with the new coronavirus are currently the main source of infection; even asymptomatic infected individuals can be a source of infection. According to the latest epidemiological studies, the incubation period ranges from 1 to 14 days, and is mainly concentrated between the 3rd and 7th day. The most common manifestations include fever, fatigue, and dry cough. Nasal congestion, runny nose, sore throat, myalgia, and diarrhea are also present in some cases. All coronaviruses share similarities in the organization and expression of their genome, 16 non-structural proteins (nsp1 to nsp16), encoded by open reading frames (ORF) 1a/b at the 5 ‘end, are followed by the peak structural (S), envelope (E), membrane (M) and nucleocapsid (N) proteins, encoded by other ORFs at the end of the 3 ‘.