Mouse Von Willebrand Factor A2 ELISA Kit is a single-wash 90-min Simplestep used to quantify Mouse Von Willebrand Factor A2 with a sensitivity of 37 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step. - Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader.