Reveal® Q+ is a competitive, single step lateral flow immunochromatographic assay. Sample extract is wicked through the reagent pad onto the test strip, which contains specific antibodies for the toxin. These kits produce both a test line and a control line depending on the amount of toxin present in the sample. The test line intensity is greatest when there is no toxin present, and the line intensity decreases with increasing amounts of toxin. The control line should always be present, which ensures the kit is functioning correctly. These quantitative test kits provide results in ppm or ppb when read on an AccuScan® reader.