Clinical trials are generally conducted to collect data regarding safety and efficacy of new drugs and devices development. There are multiple stages of drug approval in clinical trial process before drug or device can be sold in the market. In general, drugs or devices must undergo several phases of clinical trial that include preclinical, clinical trials to get market approval. Clinical trials are done on human subjects in different phases such as phase 0, phase 1, phase 2, phase 3, and phase 4 or post marketing surveillance to testify the products safety and efficacy. Early phase clinical trials include Phase 0, Phase 1, and Phase 2 stages of clinical trials which are essential to ascertain the safety and efficacy of the drug or devices in target population. Clinical trials outsourcing in pharmaceutical and medical devices industry has been a market trend owing to increased expertise of Clinical Research Organizations (CROs) coupled cost saving strategies adopted the numerous drug development companies in the market.