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Lateral and Vertical Flow Assays for Point‐of‐Care Diagnostics
Author(s) -
Jiang Nan,
Ahmed Rajib,
Damayantharan Mylon,
Ünal Barış,
Butt Haider,
Yetisen Ali K.
Publication year - 2019
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.201900244
Subject(s) - pillar , multiplexing , computer science , point of care , flow (mathematics) , resource (disambiguation) , nanotechnology , engineering , materials science , medicine , telecommunications , mechanical engineering , physics , nursing , computer network , mechanics
Lateral flow assays (LFAs) have been the pillar of rapid point‐of‐care (POC) diagnostics due to their simplicity, rapid process, and low cost. Recent advances in sensitivity, selectivity, and chemical stability enhancement have ensured the foothold of LFAs in commercial POC diagnostics. This paper reviews recent developments in labeling strategies and detection methods of LFAs. Moreover, vertical flow assays (VFAs) have emerged as an alternate paper‐based assay due to faster detection time and unique multiplexing capabilities. Smartphones as LFA readers have been transformed into a universal integrated platform for imaging, data processing, and storage, providing quantitative results in low‐resource settings. Commercial LFAs and VFAs products are evaluated with regards to their performance, market trends, and regulatory issues. The future outlook of the flow‐based assays for POC diagnostics is also discussed.