CM (Ceftiofur Metabolite) ELISA Kit

The Assay Genie CM ELISA Kit enables quantitative detection of desfuroylceftiofur, the principal residue marker of the veterinary cephalosporin antibiotic ceftiofur, across tissue, egg, and raw milk matrices. This competitive immunoassay uses a colorimetric readout and includes a pre-coated microplate, conjugate, substrate, and stop solution with a recommended sample volume of 50 uL per well. The assay is calibrated against a standard curve spanning a detection range of 0.1 to 10 ng/mL and a sensitivity near 0.05 ng/mL, supporting routine compliance screening against regulatory maximum residue limits in food. Antibodies are specific to desfuroylceftiofur with minimal cross-reactivity toward related beta-lactams such as penicillin G, amoxicillin, and ampicillin, helping confirm that positive signals reflect true ceftiofur metabolite residues. Reagents are shipped refrigerated and should be kept refrigerated until first use; unused strips may be stored frozen at -20°C with limited freeze-thaw cycles to preserve antibody activity. Intended for research use only, this kit supports food safety laboratories monitoring antibiotic residues in livestock-derived products.