Figure 1.

The rSsIR-based immunochromatographic test (ICT) kits for diagnosis of human strongyloidiasis. The intensity of the bands was visually estimated according to the interpretation card. Shown are representative images of positive and negative pooled serum samples. A criterion of the diagnostic result is whether a red band appears at the test (T) line after 15 min. When a serum sample is positive, the T and control (C) lines turn red, whereas only the control line turns red if the serum sample is negative. The cutoff intensity level for a positive result was ≥1 for the rSsIR-based IgG ICT kit and ≥0.5 for the rSsIR-based IgG4 ICT kit. S and B indicate sample and buffer holds.