Analytical sensitivity of the colorimetric c-LAMP. Visual detection with cresol red (pink = negative and yellow = positive). Serial dilutions of pAdvF plasmid DNA with concentrations of 104 copies/mL (three replicates), 5 × 103 copies/mL (six replicates), 103 copies/mL (six replicates), 5 × 102 copies/mL (six replicates), and 102 copies/mL (three replicates) were used. Neg – negative control amplification without DNA; Pos – positive control amplification, 105 copies/mL.