Healthy volunteer studies in Concord, CA
11 studies at sites in and around Concord accept healthy volunteers — people without the condition being studied. Many studies pay participants for their time and travel; the amount is set by each study, so ask the study team.
A Study to Learn About a Clostridioides Difficile Vaccine in People 65 Years of Age and Older
RecruitingPhase 3Healthy volunteers welcome
- Kaiser Permanente Walnut Creek, Walnut Creek · 5 mi away
- Diablo Clinical Research, Inc., Walnut Creek · 5 mi away
Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection
RecruitingObservational studyHealthy volunteers welcome
- John Muir Medical Center-Walnut Creek, Walnut Creek · 5 mi away
- Contra Costa Regional Medical Center, Martinez · 6 mi away
Cost Communication and Financial Navigation in Cancer Patients (COSTCOM)
RecruitingHealthy volunteers welcome
- BASS Medical Group - Lennon, Walnut Creek · 5 mi away
- Contra Costa Regional Medical Center, Martinez · 6 mi away
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
RecruitingPhase 3Healthy volunteers welcome
- GSK Investigational Site, Walnut Creek · 5 mi away
Senicapoc in Alzheimer's Disease
RecruitingPhase 2Healthy volunteers welcome
- UC Davis Alzheimer's Disease Center East Bay, Walnut Creek · 5 mi away
A Study to Learn About a COVID-19 Vaccine in Healthy Adults 18 Through 64 Years of Age
RecruitingPhase 4Healthy volunteers welcome
- Diablo Clinical Research, LLC dba Flourish Research, Walnut Creek · 5 mi away
A Study on the Immune Response and Safety of an Investigational Combined Measles, Mumps, Rubella and Varicella Vaccine, When Administered as Intramuscular Injection to Healthy Children 15 Months to 6 Years of Age
RecruitingPhase 3Healthy volunteers welcome
- GSK Investigational Site, Walnut Creek · 5 mi away
Molecular Genetics Studies of Cancer Patients and Their Relatives
RecruitingObservational studyHealthy volunteers welcome
- John Muir Medical Center-Concord Campus, Concord
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age
RecruitingPhase 3Healthy volunteers welcome
- GSK Investigational Site, Walnut Creek · 5 mi away
A Study to Learn About mRNA Vaccines Against Influenza in Adults
RecruitingPhase 2Healthy volunteers welcome
- Diablo Clinical Research, LLC d/b/a Flourish Research, Walnut Creek · 5 mi away
Urine Metabolites in the Diagnosis of Disease
RecruitingObservational studyHealthy volunteers welcome
- Bass Medical Group (Gastroenterology), Walnut Creek · 5 mi away
From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.