Veterinary Drug Residue Testing

Veterinary drug residue testing is a central pillar of food safety regulation for animal-derived products, with direct implications for public health protection and agricultural trade market access. EU Council Regulation (EU) 2019/4 and associated MRL legislation, China's Ministry of Agriculture and Rural Affairs veterinary drug residue standards, US FDA Center for Veterinary Medicine regulations, and Codex Alimentarius standards collectively define maximum residue limits (MRLs) and prohibited substance lists for veterinary drugs across meat, aquatic products, dairy, eggs, and honey matrices.

Key monitoring targets include antibacterial agents — β-lactams (penicillins, cephalosporins), tetracyclines, sulfonamides, quinolones, aminoglycosides, and macrolides — along with prohibited substances including β-agonists (clenbuterol, ractopamine), sex hormones (estrogens, progestins, androgens), nitroimidazoles, malachite green and its metabolite leucomalachite green, and chloramphenicol. LC-MS/MS-based multi-residue screening is the dominant analytical approach in both official surveillance programs and industry self-monitoring systems, placing stringent demands on standard purity, assigned-value accuracy, and stability.

CATO Research Chemicals Inc. offers over 5,200 veterinary drug residue reference standards covering the major drug classes and their metabolites, with strong alignment to EU, Chinese, and US monitoring lists. Each product is supplied with full COA and assigned-value data. Corresponding deuterium-labeled isotope internal standards are available for LC-MS/MS internal standard calibration. The majority are in stock with same-day domestic dispatch, and international shipping covers major animal product export markets.