Montreal, 2 June 2016 Dear Colleagues, The World Anti-Doping Agency's Executive Committee recently approved a new rule (ISL section 4.4) at its meeting on 11 May 2016. International Standard for Laboratories (2016) – version 9.0 will replace the current International Standard for Laboratories (2015) – version 8.0. The ISL verison 9.0 will be effective on 2 June 2016. The ISL version 9.0 is available on WADA’s website . Best regards, World Anti-Doping Agency