HIV1 p24 ELISA kit- Extracellular is a single-wash 90-min Simplestep used to quantify HIV1 p24 with a sensitivity of 4,3 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: 10x96 plates for bulk orders and 384-well plate for higher throughput.