NTM-infected CF patients may be at risk of being underdiagnosed or inappropriately treated when relying on culture and susceptibility results from non-specialized laboratories. Since this was a small study with convenience samples, a larger study needs to be carried out. If our findings are confirmed, the drivers should be elucidated for the discrepant results. Given the increasing prevalence of NTM in the population at large and not in the CF community alone[[13]](#ref-0013), elucidating any differences in testing to ensure the correct identification, including subspeciation and antimicrobial susceptibilities should be paramount