The short answer: it depends on the study
Compensation ranges from nothing (or travel reimbursement only) to several thousand dollars or more. When we checked research site pages in October 2026, some advertised “up to” amounts in the hundreds, others in the five figures for multi-week inpatient stays. Those listings change constantly, so treat any figure as a snapshot, not an offer.
What drives the amount
Time in the clinic
Overnight stays are the biggest driver. More nights usually means more pay.
Procedures
Frequent blood draws, biopsies, lumbar punctures or special scans tend to increase pay.
Follow-up visits
Return visits add to the total, but you often need to complete them all to get the full amount.
Eligibility
Studies that need hard-to-find participants may pay more.
Location & travel
Some sites reimburse travel or add stipends; others don’t.
Completion
Leaving early or being dismissed usually means prorated pay.
Advertised pay is a maximum
Most listings say “up to.” The full amount usually assumes you complete every visit and procedure. Sites often pay in installments, pay less to alternates who don’t dose, and prorate if you withdraw or are dismissed. The guide’s author describes backups sometimes leaving with only a few hundred dollars.
Watch for vague compensation
Firsthand benchmarks from the guide
These are personal experiences from the guide’s author, Spencer Wabel, written in 2024. They are not industry averages and they may not reflect current pay.
| What the author looked for or saw | Amount |
|---|---|
| Their personal target for inpatient studies of 4–14 days | $500–$700 per day |
| Rule of thumb for one large research company | $400–$500 per day |
| A “sweet spot” range for longer studies | $7,000–$12,000 |
| Typical range at one Salt Lake City site | $500–$2,000 |
| Studies at one Missouri site | $5,000–$8,000 |
The author also notes they chose studies partly by opportunity cost: a shorter, lower-paying study could mean missing a better one. You can model that trade-off with the compensation planner.
Count the costs, too
Travel, lodging between screening and check-in, time off work and childcare can all eat into what you take home. If you’re travelling, the guide strongly advises against spending heavily before you’re confirmed. Some participants have flown in twice only to be sent home as backups.
Taxes
Study compensation is generally treated as taxable income in the U.S., and sites may issue a 1099 form above certain amounts. Check with a tax professional about your situation.
Where to see pay before you call
Several research sites in our directory show pay on their listings. Search tools like Study Scavenger organize studies by compensation, which the guide’s author found saves time.