Much time and effort go into analyst training, performance monitoring, and continuing education. What would you do upon receiving notification that an analyst who completed a competency test a year ago has now rendered an incorrect result on a proficiency test? How would you provide feedback to the analyst and their supervisor? What actions would you take to investigate the situation? How can you ensure that the quality of this analyst's work performed over the last year meets the laboratory requirements? Does such a scenario raise a concern about the quality of the training program?