Medical trials are generally conducted to assure the safe usage of the new medicine before it enters the consumer market. The safety of the end user is however protected with the help of the clinical trials. What about the safety of the volunteer that participates in the medical trial to help the expert who conducts the medical research? The main reason behind conducting the pre-clinical trials is that the researchers wanted to reduce the risk of using the new medicine to the maximum extent before it reaches the point of the drug trial.
The first stage of new drug study would start with the cell testing where the drug is tested on the animal cells and human cells to detect the progress of the new medicines. After the completing this phase, the medicine is tested on the animals to know the safe usage of the medicine on the living organisms. If the drug still shows the promising results, then the drug is submitted for the FDA approval to test the humans in the medical trial.