STAT 5 A/B (pY694/699 + Total) ELISA Kit is a single-wash 90-min Simplestep used to quantify STAT 5 A/B (pY694/699 + Total) with a sensitivity of 5 µg/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.