---
title: "Data clarification form"
chunk: 1/1
source: "https://en.wikipedia.org/wiki/Data_clarification_form"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T03:52:35.225704+00:00"
instance: "kb-cron"
---

A data clarification form (DCF) or data query form is a questionnaire specifically used in clinical research. 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 DCF is part of the data validation process in a clinical trial.


== See also ==


== References ==


== Further reading ==
Celine Clive (2004), Handbook of SOPs for Good Clinical Practice, CRC, ISBN 0-8493-2181-6


== External links ==
DCF entry in Clinical Research Dictionary