The TMF (Trial Master File) is a file which contains all the documents that demonstrates that the trial has been conducted in accordance with regulatory requirements and ICH GCP. The TMF is set up at the start of a study and is archived at the end of the study for a set period of time. The TMF may take the form of different media eg paper or / and electronic. The TMF will contain essential documents which enable both the conduct and quality of the trial to be evaluated. The TMF can be inspected by auditors and regulatory bodies.