Lateral and Vertical Flow Assays for Point-of-Care Diagnostics

Nan Jiang, Rajib Ahmed, Mylon Damayantharan, Barış Ünal, Haider Butt, Ali K. Yetisen

Research output: Contribution to journalReview articlepeer-review

136 Scopus citations

Abstract

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.

Original languageBritish English
Article number1900244
JournalAdvanced Healthcare Materials
Volume8
Issue number14
DOIs
StatePublished - 25 Jul 2019

Keywords

  • commercialization
  • lateral flow assays
  • medical testing
  • point-of-care diagnostics
  • vertical flow assays

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