A member asked:

Does phase5 trial existed? if yes what are the steps done in this?

A doctor has provided 1 answer

Phase 5 trial: When a new drug or treatment is being tested in goes through different stages of testing. This starts in the lab then progresses to larger and larger studies on people. Once it is felt to be safe and effective and the treatment is in common use phase 5 trials indicates further research in communities and populations incorporating that treatment into widespread use for public health

Answered 1/30/2015

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