This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
Good clinical practice (GCP) is not required in: 
Select and explain. 
A. Preclinical phase, B. Phase I trial, C. Phase II studies, D. Phase IV studies
A: Preclinical phase
Answer: A: Preclinical phase 
Explanation: Ans. (A) Preclinical Phase(Ref: KDT 8th/e p90)* GCP guidelines are made to safeguard the interest of subjects in clinical trials. These have to be adhered to in all phases of clinical trials.* Preclinical trials are performed in animals for which different regulations are given by CPCSEA (Committee for the Purpose of Control and Supervision of Experiments on Animals).