diagnostic

/ˌdaɪəgˈnɒstɪk/ adjective

Definition

› IT, PRODUCTION used for discovering the characteristics or cause of a problem in a system or machine: Service and support on the website give users direct access to the same diagnostic tools used by the company's technicians. diagnostic equipment

› used for discovering the type or cause of an illness or other problem: John is an executive with a company that schedules and manages MRIs and other diagnostic tests. diagnostic information/questions/criteria

(Definition of diagnostic adjective from the Cambridge Business English Dictionary © Cambridge University Press)