Used to measure N-acetylglucosaminidase (NAG) enzyme activity in chicken samples, particularly in research related to kidney function and urinary tract health. The kit enables detection of early renal damage by quantifying NAG levels in urine or tissue extracts, which increases in response to cellular stress or injury. Commonly applied in veterinary diagnostics, poultry health studies, and pharmaceutical research to assess nephrotoxicity or monitor disease progression in avian models. Provides a sensitive and specific colorimetric readout, allowing high-throughput analysis in laboratory settings.