GCP stands for Good Clinical Practice. GCP is a guide to international ethical and scientific quality standards in clinical trials. The GCP guideline applies to all persons involved in a study. In addition to patient safety, GCP ensures that data and results from clinical trials are valid and reproducible. Goals of the ICH GCP Guideline The purpose of this paper is to analyse how compliance with GCP provides protection of the trial subjects and assures quality and credibility of the data obtained. Good Clinical Practice is an international quality standard for conducting trials that involve participation of human subjects. GCP is the agreed international standard for conducting clinical research. Good Clinical Practice Training is needed for researchers conducting Clinical Trials of Investigational Medicinal Products (CTIMPs). Good clinical practice (GCP) is defined as a "standard for the design, conduct, performance, monitoring, auditing, recording, analyzing and reporting of clinical trials." It provides assurance that the obtained data and reported results are credible and accurate. Good Clinical Research Practice (GCP) is a process that incorporates established ethical and scientifi c quality standards for the design, conduct, recording and reporting of clinical research involving the participation of human subjects. Compliance with GCP provides public assurance that the rights, safety, and well-being of research NT7C0fl.