Reporting of double -blind EQAS  results should occur within twenty (20) days of receipt of the samples, unless an extension has been agreed with the Testing  Authority  after the Laboratory  has provided the Testing  Authority  with a valid reason for the delay in the reporting of t he results  or a postponement has been established or approved by    ISL – January 2021 Page 125 of 160 WADA  based on justified grounds ( e.g.