To confirm the validity of reports from Conformity Assessment Bodies, you should refer in the first instance to the Body that issued the report.
The certificate shall bear the accreditation mark of the Accreditation Body that accredited the Conformity Assessment Body.
Then you must check that the Accreditation Body is a signatory to the EA MLA for the activity you are interested in. For instance, if you need a test report covered by accreditation and the EA MLA, you should check that the report contains a reference to accreditation, an accreditation mark, and an accreditation number; you should also check that the Accreditation Body that granted accreditation is a signatory to the EA MLA for testing.
To find the Accreditation Body, visit the “Directory of EA Members and MLA Signatories” page.