Used in research settings to quantify Rat DNA enzyme I (DNaseI) levels in biological samples. The ELISA kit enables detection and measurement of DNaseI activity in serum, plasma, or tissue extracts, supporting studies on DNA degradation, immune response, and diseases involving impaired clearance of extracellular DNA, such as systemic lupus erythematosus (SLE). It is also applied in evaluating therapeutic interventions that modulate DNase activity in animal models. The assay provides a sensitive and specific method for high-throughput analysis in preclinical research.