AS6171 defines test methods so results are comparable between laboratories; it certifies methods, not companies. When a lot needs it (independent source, high value, safety-related application, unusual part history), samples go to independent laboratories that apply these methods, and we tell you before payment when a lot goes to a laboratory.
Authenticity is confirmed by combining methods, each adding evidence. We tell you before payment when a lot goes to a laboratory, and the scope can be agreed with you.