Quantitative colorimetric assay. This kit is for the detection of natural and recombinant mouse IL-3. No significant cross-reactivity or interference between IL-3 and analogs was observed. Sample types: cell culture supernatants, serum. Range: 7.8 - 500 pg/ml. Precision: Intra-Assay: CV%<6.5% Inter-Assay: CV%<7.5%.