Food safety testing uses animals to assess toxicity and contamination risks, with the 3Rs framework driving significant replacement of animal tests with validated alternatives.
Food safety testing animal welfare has improved significantly through development and regulatory acceptance of non-animal alternatives. The LD50 test, which killed half the tested animals by definition, has been substantially replaced by less lethal alternatives with equivalent or better predictive value. In vitro cell culture tests replace many acute toxicity screens. The challenge is ensuring that validated alternatives are accepted by regulators globally at the same pace — some jurisdictions still require animal tests that other regions have replaced. The 3Rs principle has been most successfully implemented in food safety testing where scientific validation of alternatives has been specifically funded and pursued.