agency, can mandate that the laboratories/CABs, coming to it for accreditation, to follow both of the requirements given under Clause 7.7.2 of the IS/ISO/IEC 17025:2017. The standard says that to ensure validity of its results, the laboratory shall monitor its performance either through participation in proficiency testing or participation in interlaboratory comparisons or both. The Informant’s claim that NABL cannot mandate both to be fulfilled as a condition under its accreditation policy does not seem correct in view of Clause 7.7.2 of the IS/ISO/IEC 17025:2017. Clause 7.7.2 clearly states “ The laboratory shall monitor its performance by comparison with results of other laboratories, where available and appropriate. This monitoring shall be planned and reviewed and shall include, but not limited to, either or both of the following: [….] ” and this is followed by the requirement of participation in proficiency testing and inter-laboratory comparison other than proficiency testing. Thus, apparently, the IS/ISO/IEC 17025:2017 itself provides for discretion to the accreditation agency to mandate either or both of these requirements, and an extension to such requirement cannot be seen as an abuse. In view thereof, the allegation of the Informant with regard to proficiency testing is not made out.