Professional Clinical Research
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About Clinical Trials

A clinical trial is a research study designed to answer specific question about new drugs, medical devices, or new ways of using known treatments. Clinical trials are used to determine whether the new drug or treatment is safe, and whether it works.

Clinical trials consist of four phases: Phase I tests a new treatment on a small group, and concentrates on safety; Phase II deals with safety and efficacy, and expands the study to a larger group of people (several hundred); Phase III expands the study to an even larger group of people (thousands), and is designed to determine conclusively whether or not the treatment is effective; Phase IV takes place after the drug has been licensed, to monitor the drug for long-term effects.

The randomized, double-blind, placebo-controlled (or active-comparator-controlled) trial offers the strongest evidence that a treatment is effective. The number of participants also considerably effects how reliably the trial can determine the effects of a treatment.

Clinical trial must be consistent with good clinical practice (GCP), a rigorous*** detailed set of guidelines designed to protect the participants' safety and the integrity of the trial data. The FDA requires pharmaceutical companies and the contract research organizations (CROs) to conduct rigorous clinical trials verifying the safety and efficacy of the new drugs before granting approval for marketing.

The trial objectives and design are usually documented in clinical trial protocols. Once the objectives are determined, case report forms must be carefully designed to gather complete, unambiguous data from the trial.

During the trial, data management team must continually monitor and verify the data to ensure that they are accurate and consistent. Any missing or inconsistent data must be investigated and corrected.

Professional Clinical Research (PCR) adheres to the above information consistently and commitment. We have been successful because of passion and dedication to this process.