Issue 22, 2021

A simple and innovative sample preparation method for on-site SARS-CoV-2 molecular diagnostics

Abstract

Nucleic acid amplification is a widely used diagnostic tool, although it requires a relatively time-consuming and complicated extraction step. To address this issue outside the laboratory, we investigated a sample preparation system and determined that a silica membrane and silica-coated beads are powerful tools for the extraction from raw samples: nucleic acids are kept in the silica membrane, retained during a single wash step, and released at the elution step. The eluent is appropriate for the quantitative real-time polymerase chain reaction (qPCR) and loop-mediated amplification (LAMP) assay in terms of purity and quantity. We also built an innovative equipment-free nucleic acid extraction squeeze system which requires less than 20 min. The sample with improved purity augments the specificity and sensitivity. This system is simple, user-friendly, low-cost, and equipment-free, thus making nucleic acid extraction more accessible and affordable for researchers and untrained users. Furthermore, when combined with the reverse-transcription quantitative real-time polymerase chain reaction method, the method will accelerate the detection of diseases. The same goes when combined with the LAMP assay, especially in developing countries.

Graphical abstract: A simple and innovative sample preparation method for on-site SARS-CoV-2 molecular diagnostics

Supplementary files

Article information

Article type
Paper
Submitted
04 Aug 2021
Accepted
16 Sep 2021
First published
17 Sep 2021

Analyst, 2021,146, 6917-6923

A simple and innovative sample preparation method for on-site SARS-CoV-2 molecular diagnostics

S. Lee, J. Song and S. Kim, Analyst, 2021, 146, 6917 DOI: 10.1039/D1AN01401C

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