Rapid Influenza Diagnostic Tests | 合法醫療器材資訊網

SensitivitiesofRIDTsaregenerallyapproximately50-70%,butarangeof10-80​%hasbeenreportedcomparedtoviralcultureorRT-PCR.SpecificitiesofRIDTs​ ...

Rapid influenza diagnostic tests (RIDTs) are immunoassays that can identify the presence of influenza A and B viral nucleoprotein antigens in respiratory specimens, and display the result in a qualitative way (positive vs. negative) (1). In the United States, a number of RIDTs are commercially available. (See “Table 1: Influenza Virus Testing Methods[1]” and “Table 2: Characteristics of Rapid Influenza Diagnostic Tests[2]”.) The reference standards for laboratory confirmation of influenza virus infection in respiratory specimens are reverse transcription-polymerase chain reaction (RT-PCR) or viral culture. RIDTs can yield results in a clinically relevant time frame, i.e., less than approximately 15 minutes. However, RIDTs have limited sensitivity to detect influenza viruses in respiratory specimens compared to RT-PCR or viral culture and negative RIDT test results should be interpreted with...