The Clearweld 100 series has undergone biocompatibility testing and toxicity testing;  See Biocompatibility Test Results for the 100 Series for a list of tests conducted and the results. The Clearweld 900 series is currently undergoing biocompatibility testing and will be updated when testing is concluded. Clearweld LWA 267 resin additive has undergone dermal toxicity testing. If you would like to learn more, please Contact Us.