Clinical Trials at Banner Research  

Phases of Research


Research studies are generally divided into four phases:

Phase I
Phase I trials are designed to confirm the safety of a new medication.  Phase  I trials generally involve a small group of healthy volunteers and typically last three to four months.

Phase II
Phase II trials help to confirm whether or not a medication is effective.  These studies are “randomized”.  Randomization means that participants are divided into two groups—one group receives the active  treatment and the other group receives a “control”.  (Usually the standard treatment available).

Phase III
Phase III trials are initiated once a treatment has demonstrated both safety and efficacy.  Phase III  trials help determine whether a medication is effective over a longer period of time. These trials are longer and larger, in terms of the number of participants.  Phase III trials can provide enough data for a product to be submitted for approval by the Food and Drug Administration (FDA).

Phase IV
Phase IV clinical trials are conducted to obtain more information on a new medicine that has been submitted to the FDA for approval. Phase IV trials are also conducted when a company is gathering more information about a product already on the market.

Clinical Trials
Banner Research
Phoenix, Arizona
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