PT/ILC

You asked

Do you know any PT house which work for *** as i am not able to find any.

The requirement of PT or ILC for accreditation is to ensure the validity of results, by monitoring the performance of your laboratory’s results through comparison to that of other laboratories. Participation in Proficiency testing (PT) is one of the ways to demonstrate technical competence. This is a common challenge for a number of laboratories, where PT is not suitable, not practical or does not exist. Have a look at my response to a similar Q&A at https://community.advisera.com/topic/documentation-and-pt-program/

I suggest you obtain the proficiency testing and other relevant policy and requirement documents from your selected accreditation body, and familiarise yourself with the ILAC document ILAC P9:06/2014 ILAC Policy for Participation in Proficiency Testing Activities which sets out the policy the accreditation bodies must use in setting their own Guidelines and polices. This doument is available from https://ilac.org/publications-and-resources/ilac-policy-series/

You also asked

Also can we consider our previous testing which are done between *** and ***lab?

This may be possible, if your method and conditions have not changes, if the interlaboratory comparison is fit for purpose (e.g. correct tests, samples) and meets the requirement of ISO 17025 and the accreditation body.

The following ISO 17025 Academy document templates, available for purchase, may be of interest:

• Proficiency Testing Record at https://advisera.com/17025academy/documentation/proficiency-testing-record/
• Quality Assurance Procedure at https://advisera.com/17025academy/documentation/quality-assurance-procedure/

You can also download the free demo: ISO 17025 Documentation Toolkit at  https://advisera.com/17025academy/iso-17025-documentation-toolkit/