The experiments or observations wiped out clinical research are called Clinical trials. Clinical trials are conducted only after they receive approval from the committee within the country. These authorities are liable for benefit or risk ratio of trial and therefore the approval doesn't mean the therapy is safe; it's that only the trial could also be conducted. The cost of an attempt depends on variety of things. The sponsor for clinical trials could also be a drug company or government organization or medical device company. There are certain functions which are necessary to the trial include lab work and monitoring, managed by central laboratory or contract research organization.