title: Achieving successful proficiency testing.
mesh_terms: D002568:Certification; D019411:Clinical Laboratory Techniques / Q000592:standards*; D004282:Documentation / Q000592:standards; D017598:Efficiency, Organizational; D005161:Facility Regulation and Control / Q000592:standards*; D006801:Humans; D007753:Laboratories / Q000592:standards*; D011786:Quality Control; D014481:United States