Company directory
Paid clinical trial companies
Companies from the Money Guide, ranked by the biggest payment we verified on their own websites. Looking for your area? Browse trials by state.
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Search by compensation
These sites list thousands of studies, some sorted by pay. Use them to discover companies, then confirm on the company’s own site.
- Study Scavenger (opens in a new tab)
Spotting which companies are worth following up with
Guide note: “It saves a ton of time because a lot of these guys put that there’s compensation, and then it ends up being $500 or less.”
- Find Paid Clinical Trials (opens in a new tab)
Discovering company names to research individually
Guide note: “I would not rely on the search tool for accurate information.”
- Power (WithPower) (opens in a new tab)
Finding which institutions near you run research
Guide note: A Salt Lake City search surfaced many University of Utah trials. The author’s next step was the university’s own site.
- ClinicalTrials.gov (opens in a new tab)
Seeing who runs a study and where, before you contact the site directly
Guide note: “I would find their site and then go check out the individual company.”
- CenterWatch (opens in a new tab)
Browsing by condition
- Antidote (opens in a new tab)
Condition-based matching
- All Clinical Trials (opens in a new tab)
Finding the companies running a study, then checking which ones pay
- Trials Today (opens in a new tab)
Broad searches by location
Help other participants
Do you know of more trials not included on the site or PDF?
Please add them here. We check every submission against the company’s official website before adding it.
- Research clinics, phase 1 units, university study centers
- New locations for companies already listed
- Pages where a company publishes study pay
Take the whole list with you
The Money Guide has every state, comparison worksheets and Spencer’s tips.