Who can join a study?
The criteria decide. We show you how they work. The research team makes the call.
How a listing narrows
IllustrativeMost listings set a minimum and maximum age.
Final review: the research team only.
Eligibility Basics
Two lists. One decision maker.
Inclusion criteria
What a volunteer needs to have to join a specific study.
Exclusion criteria
Factors that keep someone from joining, often for safety. Not a judgment.
Who decides?
Only the study's research team, through its official screening. StudyCriteria Guide never decides.
Inclusion
Exclusion
Study Requirements
Check four things first.
- 01
Age requirements
Check the listed range first.
- 02
Screening
Done by the research team, not here.
- 03
Prior participation
Note any waiting period.
- 04
Study locations
Confirm visits fit your schedule.
How It Works
Read. Check. Search. Ask.
We explain. Official registries list. Research teams decide.
- 1
Read
Learn how criteria work.
- 2
Check
Use the requirement checklist.
- 3
Search
Open official public registries.
- 4
Ask
Questions go to the research team.
FAQ
Quick answers.
Does StudyCriteria Guide decide if I qualify?
No. Only the appropriate research team can assess eligibility.
Are you a research organization?
No. We are an independent information resource and not a health care provider.
Do I need to sign up for texts?
No. Texts are optional and each category has its own checkbox.
Will my phone number be shared?
No. Mobile opt-in data is never sold or shared for marketing or lead generation.
Can I stop texts?
Yes. Reply STOP any time. Reply HELP for help.
Who can use the contact form?
Adults 18 and older.
Know the criteria first.
Any study programs or research organizations that users may be introduced to through StudyCriteria Guide are independent organizations operating under their own protocols and eligibility criteria. StudyCriteria Guide does not control, supervise, guarantee, or take responsibility for protocols, eligibility criteria, safety monitoring, outcomes, or conduct of any independent clinical study program. Please review the materials provided by the independent organization and consult your own licensed health care provider before deciding to participate.