Healthy volunteers · Walnut Creek, CA
Studies for healthy volunteers in Walnut Creek, CA
12 recruiting studies have a site in Walnut Creek.
12 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1
A Study to Learn About a Vaccine Against E Coli in Healthy Adults
Pfizer
- Location
- Walnut Creek, CA + 9 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 3
A Study to Assess the Safety, Tolerability, and Immunogenicity of 3 Lots of a Multivalent Pneumococcal Conjugate Vaccine Administered to Adults
Pfizer
- Location
- Walnut Creek, CA + 36 other US sites
- Eligibility basics
- Ages 18–49
- RecruitingHealthy volunteersPhase 3
A Study to Learn About a Clostridioides Difficile Vaccine in People 65 Years of Age and Older
Pfizer
- Location
- Walnut Creek, CA + 138 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 3
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
GlaxoSmithKline
- Location
- Walnut Creek, CA + 130 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 4
A Study to Learn About a COVID-19 Vaccine in Healthy Adults 18 Through 64 Years of Age
BioNTech SE
- Location
- Walnut Creek, CA + 4 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 3
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
GlaxoSmithKline
- Location
- Walnut Creek, CA + 14 other US sites
- Eligibility basics
- Ages 1–6
- RecruitingHealthy volunteersPhase 3
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age
GlaxoSmithKline
- Location
- Walnut Creek, CA + 46 other US sites
- Eligibility basics
- Ages 1–1
- RecruitingHealthy volunteersPhase 2
A Study to Learn About mRNA Vaccines Against Influenza in Adults
Pfizer
- Location
- Walnut Creek, CA + 14 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Urine Metabolites in the Diagnosis of Disease
Luventix, Inc.
- Location
- Walnut Creek, CA + 3 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Surgical Thromboprophylaxis Practices in Oncology Patients Within the NCORP Network, STOP-VTE Study
Wake Forest University Health Sciences
- Location
- Walnut Creek, CA + 101 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection
Alliance for Clinical Trials in Oncology
- Location
- Walnut Creek, CA + 612 other US sites
- Eligibility basics
- Ages 40–75
- RecruitingHealthy volunteersPhase 2
Senicapoc in Alzheimer's Disease
University of California, Davis
- Location
- Walnut Creek, CA + 1 other US site
- Eligibility basics
- Ages 55–85
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.