Healthy volunteers · St. Louis area, MO
Studies for healthy volunteers in St. Louis area, MO
109 recruiting studies have a site in the St. Louis area. This page includes nearby cities such as Saint Louis, Chesterfield, Creve Coeur, Florissant.
109 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1
A Clinical Study of Novel Pneumococcal Vaccine V118C in Children (V118C-002)
Merck Sharp & Dohme LLC
- Location
- St Louis, MO + 14 other US sites
- Eligibility basics
- Ages 2 mo–1
- RecruitingHealthy volunteersPhase 1
A Clinical Trial Investigating the Safety and Biological Activity of the Antibody BNT351 in Adults Living Without and With HIV
BioNTech SE
- Location
- St Louis, MO + 3 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
A Study of Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of SR604 in Two Participants Groups (Part A: Healthy Participants, and Part B: Participants With Hemophilia A or Hemophilia B or Factor VII…
Equilibra Bioscience LLC
- Location
- St Louis, MO + 6 other US sites
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersPhase 1
A Safety and Immunogenicity Trial of OCU500, ChAd36 Vector Encoding SARS-CoV-2 Spike Vaccine Via Intranasal and Inhalational Routes in Previously Vaccinated Adults
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- St Louis, MO + 4 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersEarly Phase 1
PET Imaging of Natriuretic Peptide Receptor C (NPR-C) in Carotid Atherosclerosis With 64Cu-NODAGA-CANF (Volunteer - Dosimetry Study)
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Light Therapy for Obsessive-compulsive Disorder (OCD)
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 17–35
- RecruitingHealthy volunteersEarly Phase 1
PET Imaging CCR2 in Lung Inflammation
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1
NMDA Receptor Antagonist Nitrous Oxide Targets Affective Brain Circuits
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Study of Biodistribution, Metabolism, Excretion and Brain Uptake11C-M503
University of Pennsylvania
- Location
- St Louis, MO + 2 other US sites
- Eligibility basics
- Ages 40–85
- RecruitingHealthy volunteersEarly Phase 1
PET Imaging of MMP Activation in AAA: Clinical Component
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersOvernight stay mentioned
Digital vs. Speculum Exams for PPROM
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteersPhase 1
PET Detection of CCR2 in Human Atherosclerosis
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersPhase 3
A Study of Aleniglipron in Adults With Obesity or Overweight and Type 2 Diabetes Mellitus (ACCOMPLISH-2)
Gasherbrum Bio, Inc., a wholly owned subsidiary of Structure Therapeutics
- Location
- Chesterfield, MO + 55 other US sites
- Eligibility basics
- Ages 18–79
- RecruitingHealthy volunteers
Galleri® in the Medicare Population.
GRAIL, Inc.
- Location
- Joplin, MO + 70 other US sites
- Eligibility basics
- Ages 50+
- 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
- Chesterfield, MO + 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
- St Louis, MO + 138 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
BoxX-NoAF Clinical Trial
AtriCure, Inc.
- Location
- St Louis, MO + 30 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Observational Study of Decentralized Urine Optical Interaction Patterns Associated With Environmental Microplastic and Nanoplastic Exposure
Ecotera Health LLC
- Location
- St Louis, MO + 50 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparison of ACUVUE® OASYS MAX 1-Day Multifocal and DAILIES® AquaComfort Plus® Multifocal
Johnson & Johnson Vision Care, Inc.
- Location
- St Louis, MO + 9 other US sites
- Eligibility basics
- Ages 40–70
- RecruitingHealthy volunteers
A Randomized Comparison of Stage-Based Care Versus Risk Factor-Based Care for Prevention of Cardiovascular Events
Cleerly, Inc.
- Location
- St Louis, MO + 121 other US sites
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteersPhase 3
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
GlaxoSmithKline
- Location
- Chesterfield, MO + 130 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Motiva Implants® Post-Approval Study
Motiva USA LLC
- Location
- St Louis, MO + 32 other US sites
- Eligibility basics
- Ages 22+ · Women only
- RecruitingHealthy volunteers
A Study to Determine the Effects of ENDS Flavor Availability on Abstinence Within Smokers
RAI Services Company
- Location
- St Louis, MO + 6 other US sites
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
Acellular Dermal Matrix Investigation in Breast Reconstruction
RTI Surgical
- Location
- St Louis, MO + 11 other US sites
- Eligibility basics
- Ages 22+ · 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.