What Is a Clinical Trial? A Beginner's Guide
If you've never participated in one before, the phrase "clinical trial" can sound intimidating or even a little mysterious. In reality, clinical trials are carefully structured research studies, and understanding how they work can make the idea of participating feel a lot more approachable.
What Is a Clinical Trial?
A clinical trial is a research study designed to test whether a new treatment, medication, or approach is safe and effective. Clinical trials are how nearly every medication and treatment available today was studied before becoming widely available. Without them, medical progress wouldn't happen.
Every clinical trial follows a detailed plan called a protocol, which outlines exactly what will happen during the study: who can participate, what treatments or procedures are involved, how long the study lasts, and what will be measured. This protocol is reviewed and approved by an Institutional Review Board (IRB), an independent group responsible for protecting the rights and safety of everyone who takes part.
The Phases of a Clinical Trial
Clinical trials typically move through several phases, each with a different purpose.
Phase 1 studies are usually small and focus primarily on safety, often testing a treatment in humans for the first time. Phase 2 studies expand to a larger group and start to look at whether a treatment is effective, alongside continued safety monitoring. Phase 3 studies involve even larger groups, often comparing a treatment directly to a placebo or to standard care, to confirm effectiveness and monitor for side effects across a broader population. Phase 4 studies happen after a treatment has already been approved, continuing to monitor its safety and effectiveness in the general population over the long term.
Some studies, like long-term open-label extensions, focus specifically on how a treatment performs and is tolerated over an extended period, once its basic safety and effectiveness have already been established.
Placebo-Controlled vs. Open-Label Studies
You may come across the terms "placebo-controlled" and "open-label" when researching a trial.
In a placebo-controlled study, some participants receive the investigational treatment while others receive a placebo (an inactive substance), without either group knowing which one they're getting. This comparison helps researchers determine whether a treatment's effects are genuinely due to the treatment itself, rather than other factors.
In an open-label study, every participant receives the actual investigational treatment, and everyone involved knows what's being given. These studies are often used to study long-term safety and tolerability once a treatment's basic effects are already understood.
Neither approach is inherently better — they simply answer different research questions.
What Screening and Participation Typically Involve
Every clinical trial starts with a screening process to determine whether you're a good fit. This usually includes an initial conversation about your health history and current condition, followed by a more complete evaluation if you appear to qualify — often including a physical exam, lab work, and a review of your diagnosis.
Once enrolled, you'll follow a schedule of visits outlined by the study protocol, which may include regular check-ins, symptom tracking, and safety monitoring throughout your time in the study.
Why People Choose to Participate
People participate in clinical trials for a range of reasons: access to investigational treatments not yet widely available, more frequent contact with a clinical care team, and the opportunity to contribute to research that could help others facing the same condition in the future. Participation is always voluntary, and you can typically withdraw at any point if you change your mind.
Is a Clinical Trial Right for You?
If you're curious whether a clinical trial might be a good fit for your situation, the best first step is simply a conversation. At Inner Space Research in Orem, Utah, we conduct psychiatric clinical trials across a range of conditions, including bipolar depression, generalized anxiety disorder, depression, PTSD, and schizophrenia. Reaching out doesn't commit you to anything — it's simply a chance to learn more and ask questions.
Explore our current studies to see if one might be a fit for you.
This article is for general educational purposes and is not a substitute for medical advice. Please consult your healthcare provider about your specific situation and treatment options.