Human Apolipoprotein E4 ELISA Kit is a single-wash 90-min Simplestep used to quantify Human Apolipoprotein E4 with a sensitivity of 366,056 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: 10×96 plates for bulk orders and 384-well plate for higher throughput.