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A laboratory, just like any other organization, consists of numerous processes in which inputs are turned into outputs through one or more process steps. The core process of the laboratory is the primary process consisting of three stages: the pre-analytical stage (the sample is collected, received at the laboratory, registered and processed), the analytical stage (the actual laboratory test is performed and the result is recorded), and the post-analytical stage (the result is authorized, reported and archived and the sample is discarded/archived).