Data Clarification Form Template Clinical Trials. Source data are contained in source documents (original records or certified The dcf is the primary data clarification tool from the trial sponsor or contract research organization (cro) towards the investigator to clarify discrepancies and ask the investigator for clarification.
The investigator may either supply a new data point value to replace the initial value or a confirmation of the queried data point. The dcf is the primary data clarification tool from the trial sponsor or contract research organization (cro) towards the investigator to clarify discrepancies and ask the investigator for clarification. A data clarification form (dcf) [1] or data query form is a questionnaire specifically used in clinical research.