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Lateral Flow Assays in Infectious Disease Diagnosis.

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BACKGROUND Lateral flow immunoassays are widely used as diagnostic tests in many applications in human and other diagnostic areas. Assays for human applications have been commercially available since the 1980s… Click to show full abstract

BACKGROUND Lateral flow immunoassays are widely used as diagnostic tests in many applications in human and other diagnostic areas. Assays for human applications have been commercially available since the 1980s and initially were primarily used to identify pregnancy by measuring human chorionic gonadotropin in urine and serum/plasma. CONTENT The first infectious disease lateral flow assays were commercialized in the late 1980s identifying the presence of Group A Streptococcus pyogenes collected with throat swabs; innumerable other applications followed in the intervening decades. The severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) pandemic has brought a vast number of new assays for which emergency use authorization (EUA) has been requested in the USA. These assays have been designed for detection of the antibody response to an infection and viral antigens in respiratory samples. In view of the onslaught of new tests, this review will focus on the use of rapid lateral flow immunoassays for infectious diseases. Principles of lateral flow assays and approaches to the production of high-sensitivity point-of-care assays are presented. Market trends, customer requirements, and future directions of lateral flow assay technology and its applications in the infectious disease diagnostic space are discussed. SUMMARY Lateral flow immunoassays play an important role in infectious disease diagnostics. Advancements in technology have led to improved performance of these assays and acceptance by professional users. With the advent of the SARS-CoV-2 pandemic, the market has reached new levels requiring hundreds of millions of tests per year for professional and even home use.

Keywords: flow immunoassays; lateral flow; flow assays; flow; infectious disease

Journal Title: Clinical chemistry
Year Published: 2021

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