Clinical trials, also known as clinical studies or clinical research, are studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. When deciding whether to enroll in a clinical trial, you will likely encounter many terms related to clinical research and what the specific trial entails. Some terms are fairly standard across trials, regardless of the type of trial or what is being evaluated. When evaluating trial options, it’s important to understand what is involved with the clinical trial.