There are an array of clinical trials that provide financial compensation to participants. Generally, this type of compensation is focused on reimbursing participants for their time spent participating in the various activities required to have a successful trial. Some of these trials will focus on healthy volunteers, while others will focus on finding participants who have a specific condition. For the most part, the more robust the trial, the higher the financial compensation.
Below are some types of paid clinical trial opportunities:
The four phases of clinical trials
Every treatment that reaches pharmacy shelves passes through four FDA-regulated trial phases. Each phase answers a different question, recruits a different kind of volunteer, and pays differently. Here is how they compare:
| Phase | What it answers | Who participates | What it means for pay |
|---|---|---|---|
| Phase I | Is it safe, and at what dose? | Small groups, usually healthy volunteers | Highest paying, often with inpatient stays |
| Phase II | Does it work for the condition? | Larger groups of people with the condition | Per-visit compensation over weeks or months |
| Phase III | Is it better than the current standard of care? | Hundreds to thousands of patients, often placebo-controlled | Per-visit compensation, longer schedules |
| Phase IV | How does it perform long term, after approval? | People already using the approved treatment | Modest per-visit or survey compensation |
An institutional review board reviews every phase before enrollment opens, and informed consent applies at each step. Phase I studies pay the most because they demand the most time, not because payment scales with risk. For current figures by study type, see our guide to the highest paid clinical trials.