Healthy volunteers · California
Studies for healthy volunteers in California
701 studies have at least one recruiting site in California. These studies say in their official record that they accept healthy volunteers. Many are Phase 1 studies that test how a new medicine is absorbed and tolerated; others recruit healthy people as a comparison group alongside patients.
701 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
A Prospective Registry to Enable Collection of Standardized Routine Care Oncology Patient Data
N-Power Medicine
- Location
- Monterey, CA + 6 other US sites
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
MindRhythm Detection of Concussion and Recovery Study
MindRhythm, Inc.
- Location
- Cupertino, CA
- Eligibility basics
- Ages 4+
- RecruitingHealthy volunteers
In Vivo Cross-Modal Imaging of Skin
Gabriel Sanchez
- Location
- Mountain View, CA
- Eligibility basics
- Ages 2–90
- RecruitingHealthy volunteers
The Mitopure Challenge to Detect Levels of Urolithin A in Dried Blood Spots
Amazentis SA
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Paired Non-inferiority Study Comparing Overture Semi-automated Vitrification System ("DaVitri") to Standard Manual Process for Clinical Pregnancy Outcomes
Overture Life
- Location
- Novato, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
A Randomized, Double Blind, Placebo Controlled, Clinical Study to Examine the Benefits of an Oral Product in Panelists With Menopausal Symptoms Including Vasomotor Symptoms (VMS).
Olly, PBC
- Location
- San Francisco, CA
- Eligibility basics
- Ages 40–65 · Women only
- RecruitingHealthy volunteers
Pilot Study of the Entarik System With Advanced Functionality in Health Adults
Gravitas Medical, Inc.
- Location
- Berkeley, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Computerized Tests of Cognitive Decline in Presymptomatic Alzheimer's Disease
Neurobehavioral Systems, Inc.
- Location
- Berkeley, CA
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteers
Treatment to Lift Facial Lax Skin and Improve Facial Wrinkles Using Precise and Lift Applicators
Sofwave Medical LTD
- Location
- La Mesa, CA + 1 other US site
- Eligibility basics
- Ages 35–80
- RecruitingHealthy volunteersPhase 2
Thymus Regeneration, Immunorestoration, and Insulin Mitigation Extension Trial
Intervene Immune, Inc.
- Location
- Torrance, CA
- Eligibility basics
- Ages 40–80
- RecruitingHealthy volunteers
Prospective Study on Power Prenatal Vitamins for Males on YO Score At-home Sperm Test Results
The Bird and Be Co Inc
- Location
- Encino, CA
- Eligibility basics
- Ages 18–50 · Men only
- RecruitingHealthy volunteers
Prospective Study of oncRNA Stratification of Cancer by Size and Stage
Exai Bio Inc.
- Location
- Palo Alto, CA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Therapeutic Effects of Electrical Vestibular Stimulation (EVS) on Balance and Gait
Neursantys Inc
- Location
- Cupertino, CA + 1 other US site
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Kesimpta (Ofatumumab) Pregnancy Registry
Novartis Pharmaceuticals
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteersPhase 3
Safety and Efficacy of Brilaroxazine (RP5063) in Schizophrenia
Reviva Pharmaceuticals
- Location
- Garden Grove, CA + 16 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Urine Metabolites in the Diagnosis of Disease
Luventix, Inc.
- Location
- Encinitas, CA + 3 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Controlled Desaturation Study for Perin Health Patch Validation
Perin Health Devices
- Location
- Woodland Hills, CA
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Post-Authorization Safety Study for Assessment of Pregnancy Outcomes in Patients Treated With Mayzent
Novartis Pharmaceuticals
- Location
- La Jolla, CA
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteersPhase 2
Dose Regimen Study of SLI-F06 in Healthy Volunteers
Scarless Laboratories, Inc.
- Location
- Encinitas, CA + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 2
CMV-MVA Triplex Vaccination in HLA-Matched Related Stem Cell Donors for the Prevention of CMV Infection in Patients Undergoing Hematopoietic Stem Cell Transplant
City of Hope Medical Center
- Location
- Duarte, CA + 2 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
ChangeGradients: Promoting Adolescent Health Behavior Change
University of California, San Francisco
- Location
- San Francisco, CA
- Eligibility basics
- Ages 15–17
- RecruitingHealthy volunteers
MATAspire: Mental Health Awareness Tailored App for Substance Prevention and Integrated Resilience Education
California State University, Northridge
- Location
- Northridge, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Coaching and Leadership in Autism Support Settings
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Trial Evaluating Nutritional Fiber in Digestive Symptoms of Endometriosis
LOAM Science
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
Who these studies look for
“Healthy” is decided at screening, not by you. Sites usually check vital signs, blood and urine tests, an ECG, your medications and sometimes your BMI or smoking status. A study can still turn you away for reasons that have nothing to do with being unwell, such as timing or a full roster.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Do healthy volunteer studies pay?
Many do, because volunteers give up time and follow strict schedules, but amounts are set by each study and are usually only confirmed by the research site. When a record states an amount we show the exact wording; otherwise we say compensation is not disclosed.
What happens at a screening visit?
Expect consent paperwork first, then a health questionnaire, vital signs, blood and urine samples and often an ECG. You can ask questions and withdraw at any time, before or after you sign.