Fig. 5

Optimization results of the NC membrane and sample pad and the cut-off value. (a) Chromatographic results for negative samples and positive samples tested by strips prepared with different NC membranes. (b) Chromatographic results for negative samples and positive samples tested by strips prepared with different sample pads. (c) Chromatographic results for blood samples containing different concentrations of FAMs, as tested by the developed LFIA under optimal conditions. Note: Negative samples: blood samples that do not contain FAMs; Positive samples: blood samples with 0.5 mg/mL FAMs