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Clinical Trials 101 Information

Dr Roger Henderson
Reviewed by Roger HendersonReviewed on 29.04.2024 | 2 minutes read

A clinical trial is when treatments or interventions are tested on a sample of people in order to see the safety, effectiveness, side effects of the treatment, and compare how effective they are against other interventions. It is a crucial part of research that, if proven safe and effective, allows new treatments to be safely rolled out on a large scale.

How are they started?

Clinical trials are carefully planned by a team of researchers which usually include healthcare professionals and doctors. These plans, and the trial itself, also has to be approved before it can begin.

The medical regulators and approval process for a clinical trial is different in each country. They make a decision by weighing the risks and benefits of all factors of any proposed trial. Approval of the trial doesn't mean the treatment is safe, only that the trial is safe and reasonable to proceed.

What next?

After approval of the trial, the treatment or intervention is tested on a small number of people in the early phases. If that phase is successful then it undergoes further phases of testing which includes a larger and more diverse number of people. At each point, the volunteers of the trial are carefully monitored throughout the process for any side effects and the effectiveness of the treatment or intervention.

After the trial is complete

After completion of the trial, the data will be put together and presented to the medical regulator in that country to seek approval for the treatment to be able to be used. In the UK, this is the MHRA (medicines and healthcare products regulatory agency) who will give approval.

All approved vaccines, including the COVID-19 vaccine, have gone through all these stages of the clinical trials meaning that it has been thoroughly tested and are safe for use.

Can I be a part of a trial?

There are paid and volunteer roles available for people wanting to be part of clinical trials. We would recommend discussing this with your doctor prior to commencing a clinical trial, so they are aware and can double-check there are no health reasons why you shouldn’t take part in it.

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Dr Roger Henderson
Reviewed by Roger Henderson
Reviewed on 29.04.2024
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