About PJLA

PJLA is a MRA Signatory of the International Laboratory Accreditation Cooperation (ILAC) and of the Asia Pacific Laboratory Accreditation Cooperation (APLAC) for both testing and calibration.

Perry L. JohnsonPerry L. Johnson, a world leader in quality, established Perry Johnson Laboratory Accreditation, Inc. (PJLA) in 1999. PJLA is a private third-party accreditation body that validates the competency of testing and calibration laboratories through the use of international and national standards. PJLA is fully supported by our stockholder, Mr. Perry L. Johnson.

Additionally, PJLA is affiliated with Perry Johnson Laboratory Accreditation NP, Inc. (PJLANP) a Michigan nonprofit organization established in 2016. This organization in combination with PJLA, Inc. is a non-profit establishment providing accreditation services to (CABS) where only non-profit organizations can provide such services. PJLA, Inc. is  the sole member of PJLANP.

PJLA Rights and Duties as an Accreditation Body

As an accrediting body, PJLA is required to adhere to ISO/IEC 17011:2017 Conforming Assessment – General Requirements for Accreditation Bodies Accrediting Conformity Assessment Bodies. PJLA’s adherence to this standard is demonstrated through peer evaluations performed by international recognition bodies. PJLA is a MRA Signatory of the International Laboratory Accreditation Cooperation (ILAC) and of the Asia Pacific Accreditation Cooperation (APAC) for both testing and calibration. At no such time does PJLA offer consultancy services to (CABs).

PJLA is required to adhere to the rules of ILAC, APAC, national recognition organizations and regulatory specific requirements. Due to this requirement (CABs) accredited or in the process of becoming accredited shall adhere to the policies of PJLA including our accreditation procedure and accreditation symbol procedure. Specific criteria and obligations of both PJLA and (CABS) can be found in SOP-1, PJLA Accreditation Procedure along with other related documents as listed on the document section of our website.


PJLA recognizes the importance of impartiality when carrying out accreditation services, manages conflict of interest and ensures objectivity of its accreditation activities. PJLA ensures that all personnel including committees act objectively and are free from any undue commercial, financial or other pressures that could compromise impartiality.

PJLA and our Related Bodies

The brand name Perry Johnson serves many different types of quality-based organizations. This includes a related body of PJLA, Perry Johnson Registrars, Inc. (PJR). PJR is a full-service certification body offering various quality system certification services. PJLA stemmed from PJR, due to the growing need of laboratory accreditation. PJLA and PJR are separate legal entities, offering separate services and adhere to separate standards (i.e ISO/IEC 17011:2017 versus ISO/IEC 17021:2015). Although we are separate organizations, PJLA and PJR continue to have a relationship that shares resources including assessment staff. This allows for clientele to utilize similar assessors and to eliminate excessive travel expenses. At no such time does PJLA or PJR reduce assessment time or perform less comprehensive assessments because of this relationship.

In various accreditation standards offered by PJLA, the ability to assess Option B is available. This option potentially reduces the time spent on reviewing a CAB’s quality management system when they are already certified by an IAF accredited certification body to ISO 9001:2015 based standards. This option is provided to all qualified CABs and not just those certified by our related body Perry Johnson Registrars, Inc. (PJR).