Figure 4From: Development of a colloidal gold-based lateral flow dipstick immunoassay for rapid qualitative and semi-quantitative analysis of artesunate and dihydroartemisininDipsticks showing colour changes corresponding to concentrations of artemisinin in distilled water. The indicator range was 2,000-5,000 ng mL-1 for artemisinin. Each sample dilution was analyzed in triplicates and the figure shows the representative pictures.Back to article page