Location · Connecticut
Clinical trials recruiting in Connecticut
368 recruiting studies have at least one site in Connecticut; 140 accept healthy volunteers. Studies that need a specific condition are included too, so check each listing.
Want the research companies that run paid Phase 1 studies for healthy volunteers? Paid clinical trial companies in Connecticut.
368 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1
Study of the Safety, Tolerability, Electrophysiological Effects and Efficacy of DMT in Humans
Deepak C. D'Souza
- Location
- West Haven, CT
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersPhase 1
AB821 in Adult Participants With Locally Advanced or Metastatic Solid Tumors
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
Saci Nivo Rela for TNBC
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Gender Related Differences in the Acute Effects of Delta-9-Tetrahydrocannabinol in Healthy Humans: Sub-Study II
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersEarly Phase 1
Cannabidiol Effects on Learning and Anxiety
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteersEarly Phase 1
Study of Biodistribution, Metabolism, Excretion and Brain Uptake11C-M503
University of Pennsylvania
- Location
- New Haven, CT + 2 other US sites
- Eligibility basics
- Ages 40–85
- RecruitingHealthy volunteersEarly Phase 1
SV2A Density Cannabis Use Disorder
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersPhase 1
Open-Label Psilocybin Study in Transdiagnostic Population
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Bone Marrow Derived Stem Cells Mobilization for Treatment of Abnormal Endometrium
Hugh Taylor
- Location
- Orange, CT
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Intradermal Influenza Vaccination
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteersPhase 1
Gender Related Differences in the Acute Effects of Delta-9-Tetrahydrocannabinol in Healthy Humans
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 1
Gender Related Differences in the Acute Effects of Delta-9-Tetrahydrocannabinol in Healthy Humans: Sub-Study I
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 18–55
- 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
- Waterbury, CT + 55 other US sites
- Eligibility basics
- Ages 18–79
- 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
- Milford, CT + 36 other US sites
- Eligibility basics
- Ages 18–49
- RecruitingHealthy volunteers
Observational Study of Decentralized Urine Optical Interaction Patterns Associated With Environmental Microplastic and Nanoplastic Exposure
Ecotera Health LLC
- Location
- Hartford, CT + 50 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
GlaxoSmithKline
- Location
- Stamford, CT + 130 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Study to Evaluate the Safety of Retreatment With Restylane® Lyft With Lidocaine for Augmentation of the Chin Region
Galderma R&D
- Location
- Westport, CT + 6 other US sites
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
Shield Post-Approval Study Protocol
Guardant Health, Inc.
- Location
- Branford, CT + 48 other US sites
- Eligibility basics
- Ages 45–81
- RecruitingHealthy volunteers
Evaluation of the Q-Pad hrHPV Test System for Identifying Precancer
Qurasense
- Location
- New Haven, CT + 2 other US sites
- Eligibility basics
- Ages 25+ · Women only
- RecruitingHealthy volunteersPhase 2
A Study to Learn About mRNA Vaccines Against Influenza in Adults
Pfizer
- Location
- Milford, CT + 14 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
BioBrace® Implant for Arthroscopic Repair of Full Thickness Rotator Cuff Tears
CONMED Corporation
- Location
- New Haven, CT
- Eligibility basics
- Ages 40–70
- RecruitingHealthy volunteers
Data Gathering for A10900
Optos, PLC
- Location
- West Hartford, CT + 2 other US sites
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
Molecular Indicators of Systematic Fitness
VO Health, Inc.
- Location
- New Haven, CT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Data Collection and Professional Simulated Use Study to Develop an Embryo Quality Artificial Intelligence (AI) Model
Fairtility
- Location
- Stamford, CT
- Eligibility basics
- Ages 18+ · Women only