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Updated: Jun 10, 2026

Detecting SARS-CoV-2 Virus by Reverse Transcription-Loop-Mediated Isothermal Amplification
Published on: September 8, 2023
Heat denaturation increases the sensitivity of the cytomegalovirus loop-mediated isothermal amplification method
Ryota Suzuki1, Masaru Ihira, Yoshihiko Enomoto
1Department of Pharmacy, Faculty of Clinical Engineering, Fujita Health University School of Health Sciences, Japan.
Abstract:
A new protocol for CMV LAMP with an additional heat denaturation step was developed. While the sensitivity of the original CMV LAMP method was 500 copies/tube, sensitivity was increased by up to 100 copies/tube by additional heat denaturation. CMV DNA was detected in 103 of 350 samples (29.4%) by the original CMV LAMP procedure and 148 of 350 samples (42.3%) by the new CMV LAMP protocol. When the pp65 antigenemia assay was used as the standard method, the sensitivity, specificity, PPV, and NPV of the new protocol were 92.9%, 77.7%, 62.2%, and 96.5%, respectively.
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