Paid Clinical Trials in California

Browse 1,028 currently-open paid paid clinical trials available to residents of California — including remote opportunities you can do from anywhere. Every listing shows the pay and who runs it. Always free to join; you never pay to participate.

Updated daily · Real opportunities from vetted research & mystery-shopping providers

Compensated

Get Paid to Help Prevent Vision Loss in California

Clinical Trial In-person
University of California, San Francisco · Ages 60+
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Compensated

Get paid to take a cognitive test in California

Clinical Trial In-person
The Neurology Center of Southern California · Ages 18+
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Compensated

Earn Cash to Help Quit Smoking at UCLA in California

Clinical Trial In-person
University of California, Los Angeles · Ages 18+
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Compensated

Get Paid to Help Study Knee Osteoarthritis Diets in California

Clinical Trial In-person
University of California, San Diego · Ages 18+
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Compensated

Earn cash for chronic low-back pain trial at UCSF

Clinical Trial In-person
University of California, San Francisco · Ages 21+
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Compensated

Earn cash for psoriasis research: In-person clinical trial open now

Clinical Trial In-person
InventisBio Co., Ltd · Ages 18+
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Compensated

Earn Cash for Childhood Obesity Study at UC San Diego

Clinical Trial In-person
University of California, San Diego · Ages 7+
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Compensated

Get Paid To Help Duke University Study Fear And Anxiety

Clinical Trial In-person
Duke University · Ages 18+
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Compensated

Get Paid Cash to Help with Moderate to Severe Asthma Research

Clinical Trial In-person
University of California, San Diego · Ages 18+
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Compensated

Get Paid to Share Your Opinion on School ADHD Programs in California

Clinical Trial In-person
University of California, San Diego · Ages 7+
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Compensated

Get paid to help depression research at Stanford University

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Get paid to try new depression therapy at UC San Diego

Clinical Trial In-person
University of California, San Diego · Ages 18+
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Compensated

Earn Cash Joining Dementia Study in California Ages 55 to 85

Clinical Trial In-person
Healthy Minds Initiative · Ages 55+
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Compensated

Get Paid to Help Study Neck and Back Pain Treatments

Clinical Trial In-person
SpineZone Medical Fitness, Inc · Ages 18+
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Compensated

Get Paid to Test New Eczema Medicine at Pfizer Trial

Clinical Trial In-person
Pfizer · Ages 18+
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Compensated

Get compensated to help manage blood pressure at Stanford

Clinical Trial In-person
Stanford University · Ages 30+
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Compensated

Compensated Trial for Anxiety: Join UCLA Study in CA, MA, or SC

Clinical Trial In-person
University of California, Los Angeles · Ages 18+
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Compensated

Get Paid to Help Improve Knee Osteoarthritis Research in California

Clinical Trial In-person
University of California, San Diego · Ages 45+
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Compensated

Earn cash in California at a Stanford University diabetes study

Clinical Trial In-person
Stanford University · Ages 35+
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Compensated

Get paid to join a knee, hip, or shoulder study in California

Clinical Trial In-person
Palo Alto Veterans Institute for Research · Ages 25+
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Compensated

Help Compare Sciatica Treatments at UCSF for Cash

Clinical Trial In-person
University of California, San Francisco · Ages 18+
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Compensated

Earn Cash for Type 2 Diabetes Study in San Diego

Clinical Trial In-person
San Diego State University · Ages 18+
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Compensated

Earn cash helping pregnant women quit smoking in California

Clinical Trial In-person
Loma Linda University · Ages 18+
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Compensated

Earn Cash Joining an Obesity Weight Loss Study in California

Clinical Trial In-person
Cedars-Sinai Medical Center · Ages 14+
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Compensated

Get paid to help research bipolar depression treatment in California

Clinical Trial In-person
Andrew Krystal · Ages 22+
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Compensated

Get Paid to Test a Supplement for Situational Anxiety in California

Clinical Trial In-person
PLT Health Solutions · Ages 18+
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Compensated

Get Paid to Join Psoriatic Arthritis Trial in California

Clinical Trial In-person
University of California, San Diego · Ages 18+
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Compensated

Earn cash for UCLA sleep study on inflammation and sleep

Clinical Trial In-person
University of California, Los Angeles · Ages 18+
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Compensated

Earn Cash for Mental Health TMS Trial at Boston or CA

Clinical Trial In-person
Brigham and Women's Hospital · Ages 18+
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Compensated

Get Paid Cash for Diabetes Research at Stanford in California

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Earn Cash Joining Loma Linda High Blood Pressure Trial for Moms in California

Clinical Trial In-person
Loma Linda University · Ages 18+
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Compensated

Get Paid Cash for Filipino Parenting Research in California

Clinical Trial In-person
Kaiser Permanente · Ages 8+
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Compensated

Get paid to join a blood pressure study in California

Clinical Trial In-person
Chad [email protected] · Ages 18+
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Compensated

Get Paid to Share Your Opinions on Chronic Low-Back Pain Research in California

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Get Paid to Join HIV Research Study at UCSF in California

Clinical Trial In-person
University of California, San Francisco · Ages 18+
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Compensated

Get paid to help test new Alzheimer's brain scans in California

Clinical Trial In-person
David Wilson · Ages 40+
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Compensated

Get paid to share opinions on obesity care at UCLA

Clinical Trial In-person
University of California, Los Angeles · Ages 13+
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Compensated

Earn cash helping Stanford study autism routines for kids 6-11

Clinical Trial In-person
Stanford University · Ages 6+
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Compensated

Get Paid to Join a Psoriasis Study in California

Clinical Trial In-person
University of California, San Francisco · Ages 18+
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Compensated

Paid Depression Trial at UC San Diego in California

Clinical Trial In-person
University of California, San Diego · Ages 18+
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Compensated

Get Paid to Help Stanford Research Crohn's in California Clinics

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Earn cash helping study low blood pressure care for newborns

Clinical Trial In-person
University of California, Davis · Ages 18+
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Compensated

Get paid cash to help study depression therapy in California

Clinical Trial In-person
University of California, Los Angeles · Ages 21+
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Compensated

Get Cash for Helping Stanford Study Sleep and Mood

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Earn cash for sharing opinions on a healthy supplement in California

Clinical Trial In-person
Olly, PBC · Ages 40+
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Compensated

Get Paid to Test a Sleep Apnea Device in California

Clinical Trial In-person
Michael Harrison · Ages 21+
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Compensated

Get Paid to Help Treat Chronic Low-Back Pain at UCLA

Clinical Trial In-person
University of California, Los Angeles · Ages 40+
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Compensated

Get Paid to Help Test a New Triglyceride Drug in California

Clinical Trial In-person
Marea Therapeutics · Ages 18+
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Compensated

Get Paid to Test an ADHD App in California

Clinical Trial In-person
University of California, Riverside · Ages 8+
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Compensated

Get paid to try nitrous oxide for OCD treatment at Stanford

Clinical Trial In-person
Stanford University · Ages 18+
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Compensated

Get Paid to Do Yoga for Mild Depression in California

Clinical Trial In-person
University of California, San Francisco · Ages 18+
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Compensated

Earn Cash for Spine Pain Research in San Diego

Clinical Trial In-person
San Diego State University · Ages 18+
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Compensated

Get paid cash for pediatric respiratory infection opinions at Vanderbilt in CA or TN

Clinical Trial In-person
Vanderbilt University Medical Center · Ages 6 Months+
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Compensated

Get Paid to Join a UC San Francisco Depression Trial in California

Clinical Trial In-person
University of California, San Francisco · Ages 15+
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Compensated

Get Paid to Try Acupuncture for High Blood Pressure in CA

Clinical Trial In-person
University of California, Irvine · Ages 45+
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Compensated

Get Paid to Help Test New Migraine Inhaler in Nevada

Clinical Trial In-person
Aspeya, Inc. · Ages 18+
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Compensated

Get Paid to Help Research Social Anxiety in California

Clinical Trial In-person
Children's Hospital Los Angeles · Ages 16+
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Compensated

Get Paid to Share Diabetes Trial Opinions In-Person

Clinical Trial In-person
Senseonics, Inc. · Ages 18+
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Compensated

Get Paid to Share Opinions on Alcohol Treatment at USC in California

Clinical Trial In-person
University of Southern California · Ages 21+
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Compensated

Get Paid Cash for a Brain Health Study at Penn

Clinical Trial In-person
University of Pennsylvania · Ages 40+
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See all paid studies in California →

Paid Clinical Trials by state

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