Electromechanical RT-LAMP device for portable SARS-CoV-2 detection


Tarim E. A., Oksuz C., Karakuzu B., APPAK Ö., SAYINER A. A., Tekin H. C.

Talanta, vol.254, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 254
  • Publication Date: 2023
  • Doi Number: 10.1016/j.talanta.2022.124190
  • Journal Name: Talanta
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, L'Année philologique, Aerospace Database, Analytical Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, EMBASE, Food Science & Technology Abstracts, MEDLINE, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Colorimetric detection, Electromechanical systems, Loop-mediated isothermal amplification (LAMP), Point-of-care testing, SARS-CoV-2
  • Middle East Technical University Affiliated: No

Abstract

© 2022 Elsevier B.V.Rapid point-of-care tests for infectious diseases are essential, especially in pandemic conditions. We have developed a point-of-care electromechanical device to detect SARS-CoV-2 viral RNA using the reverse-transcription loop-mediated isothermal amplification (RT-LAMP) principle. The developed device can detect SARS-CoV-2 viral RNA down to 103 copies/mL and from a low amount of sample volumes (2 μL) in less than an hour of standalone operation without the need for professional labor and equipment. Integrated Peltier elements in the device keep the sample at a constant temperature, and an integrated camera allows automated monitoring of LAMP reaction in a stirring sample by using colorimetric analysis of unfocused sample images in the hue/saturation/value color space. This palm-fitting, portable and low-cost device does not require a fully focused sample image for analysis, and the operation could be stopped automatically through image analysis when the positive test results are obtained. Hence, viral infections can be detected with the portable device produced without the need for long, expensive, and labor-intensive tests and equipment, which can make the viral tests disseminated at the point-of-care.