First, based on an unsystematic review of related literature, an outline of functional laboratory information system requirements was identified. In the second stage, these requirements were identified in group meetings in the form of a semi‐structured questionnaire and given to experts. Then, a modified Delphi technique was used to reach an agreement on each item. Then, based on experts' comments, the final version of the questionnaire was presented including 61 closed‐ended items using the Likert scale and an open‐ended item. It was surveyed by 50 experts using the Delphi technique. Responses were scored, and the requirements whose mean final score was 3 and above were finally confirmed. In the second phase, based on the confirmed requirements, a checklist comprising 68 requirements was prepared and adopted hospital information systems were evaluated through researcher observation