Beta-agonist residues in broilers concentrate in kidney and liver, not in the breast meat that dominates the food supply. In a 168-bird trial, clenbuterol reached 117.76 micrograms per kg in kidney at the first withdrawal sample and dropped below the decision limit by day 30. Breast muscle peaked far lower. Neither dose of any compound improved body weight. Why beta-agonist residues in broilers matter for export testing Beta-adrenergic agonists are banned as growth promoters across the European Union. Clenbuterol and salbutamol sit on routine screening lists for poultry under national residue-control programs. Any exporter shipping into a market with that framework needs three answers: what the test looks for, where…