Quantitative colorimetric assay. This assay has high sensitivity and excellent specificity for detection of mouse C4. No significant cross-reactivity or interference between mouse C4 and analogues was observed. Note: Limited by current skills and knowledge, it is impossible for us to complete the cross-reactivity detection between mouse C4 and all the analogues, therefore, cross reaction may still exist. Sample types: plasma, serum, tissue homogenates. Range: 0.156 - 10 μg/ml. Precision: Intra-Assay: CV<8% / Inter-Assay: CV<10%. Time: 4.5 hours