Question

Describe the precautions that are taken when designing the third clinical phase of a drug trial, to make sure the conclusions drawn from the results of the trial arise only from genuine biological effects of the drug being tested. Explain the reasons for the precautions you have described.

Answer 1

Answer:
In order to guarantee fixation the results related only to a certain drug, third clinical phase of drug trial is design with consideration of limited access of the tested biological organism to other drugs. In this way sufficient result validity can be reached.