Quantitative colorimetric assay. This assay has high sensitivity and excellent specificity for detection of High Sensitive Interleukin 1 Beta (IL1b). No significant cross-reactivity or interference between High Sensitive Interleukin 1 Beta (IL1b) and analogues was observed. Sample types: cell culture supernatants, cell lysates, plasma, serum, tissue homogenates. Range: 1.56 - 100 pg/ml. Precision: Intra-Assay: CV<10% / Inter-Assay: CV<12%. Time: 3 hours