Requiring use of alternatives to animal testing methods.

HB 2542 requires Washington-based animal testing facilities, contract testing facilities, and drug manufacturers to use non-animal test methods for drug development when scientifically valid alternatives are available. It prohibits the use of animal test methods in the drug development process (including discovery and preclinical research) if equivalent or better alternatives exist, defined as methods validated by federal bodies that don’t involve animals. The law does not apply if federal regulations mandate animal testing, and violations are treated as unfair trade practices under Washington’s consumer protection law. This directly affects entities conducting drug safety and efficacy testing within the state, aiming to align with federal policy supporting non-animal testing methods.