Procedures, with records kept, shall cover: setting, reviewing and approving what the laboratory requires of every product and service it obtains from outside; the criteria for qualifying, choosing, evaluating and re-evaluating the performance of external providers; referring samples; making sure bought-in products and services meet the laboratory's requirements, or this document where relevant, before they are used or passed to the user; and acting on the results of provider performance evaluations.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.