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New SARS-CoV-2 Rapid Colorimetric LAMP Assay Kit Enables Visual Detection of Coronavirus in 30 Minutes

By LabMedica International staff writers
Posted on 13 Jul 2020
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Image: Rapid, simple, color-based detection of SARS-CoV-2 RNA (Photo courtesy of New England Biolabs Inc.).
Image: Rapid, simple, color-based detection of SARS-CoV-2 RNA (Photo courtesy of New England Biolabs Inc.).
A newly-launched SARS-CoV-2 rapid colorimetric LAMP assay kit that can be used for the detection of novel coronavirus, SARS-CoV-2 RNA serves as a simple alternative to RT-qPCR and enables visual detection of amplification of SARS-CoV-2 nucleic acid in just 30 minutes.

The new kit launched by New England Biolabs (Ipswich, MA, USA) utilizes loop-mediated isothermal amplification (LAMP) to detect specific segments of the viral genome. This system provides a clear visual detection of amplification, based on the generation of protons and the subsequent drop in pH that occurs from the extensive DNA polymerase activity in a LAMP reaction. The decrease in pH produces a color change, with pink indicating a negative result and yellow indicating a positive result.

The assay targets N and E regions of the SARS-CoV-2 genome, enabling optimized sensitivity and specificity. A constant reaction temperature eliminates the need for sophisticated instrumentation, including thermocyclers. The kit includes non-template control, positive control, and internal control to verify assay performance.

"RT-qPCR, the predominant nucleic acid amplification technology, requires a laboratory with sophisticated equipment, and can take hours to produce a readout," said Steven Chiu, Product Marketing Manager, DNA Amplification at NEB. "With the SARS-CoV-2 Rapid Colorimetric LAMP Assay Kit, all you need is a simple heat source and 30 minutes to visually detect amplification of SARS CoV-2 RNA. This assay thus has the potential to be very beneficial in a low-resource or point-of-care setting."


Related Links:
New England Biolabs


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