Clients worldwide face increasing pressure to obtain best value for money from NDT surveys. Yet this gives rise to the dilemma of whether a high quality survey and analysis is being undertaken. ACI 228 Committee provides documentation on the available NDT test methods, but stops short of giving advice on the interpretation of data. RILEM TC Committee on the NDT of Concrete does give advice - but the Committee has a fixed term of operation. This paper discusses progress towards international standards of NDT of concrete and makes specific comments on differences in international practice. Finally, examples of best international practice in NDT will be highlighted. The American Concrete Institute (ACI) is identified as a leader in translation from research to practice.