Fig. 2
From: AI-enhanced rapid diagnostic testing platform for mass opisthorchiasis screening
The standard OV-RDT color chart for the score based on the band intensity from \(+1\) to \(+4\) was constructed using Opisthorchis viverrini crude antigen diluted in clean urine. The color intensity at T was expressed as \(+4\) for the highest intensity and \(+1\) for the lowest intensity, implying lover of infection.
