Human PD-L1 ELISA Kit [28-8] is a single-wash 90-min Simplestep used to quantify Human PD-L1 [28-8] with a sensitivity of 3,75 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 - Different formats for different needs: 384-well plate for higher throughput. - Cited in over 10 citations.