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7,120 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 26, 2026). No sign-up needed.
Most recently updated studies · page 36 of 297
- RecruitingHealthy volunteers
Online Evaluation of the Diagnostic Accuracy of BlinkLab's Digital Assessments for Autism
Blinklab Limited
- Location
- Princeton, NJ
- Eligibility basics
- Ages 2–11
- RecruitingHealthy volunteers
A Study Evaluating the Impact of Regular FODMAP-targeting Digestive Enzyme Blend Use on Gastrointestinal Symptoms in Individuals With Self-Reported Bloating
Kiwi Health Inc
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Diagnosis of Abdominal Pain Using RNA Levels: The NATURAL Study
True Bearing Diagnostics, Inc.
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Pupillometry in Identifying Risk of Postoperative Opioid-induced Respiratory Depression in Children Undergoing Tonsillectomy
NeurOptics Inc
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 3–17
- RecruitingHealthy volunteersPhase 2
A Study to Learn About mRNA Vaccines Against Influenza in Adults
Pfizer
- Location
- Mobile, AL + 14 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
A Study to Learn About the Safety, Tolerability, and Immunogenicity of a Fifth Dose of 6-Valent OspA-Based Lyme Disease Vaccine
Pfizer
- Location
- Worcester, MA + 10 other US sites
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Ventral or Inguinal Hernia, Robotically Repaired With OviTex Mesh
Tela Bio Inc
- Location
- Mobile, AL + 2 other US sites
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Direct to Patient Minimal Risk Biospecimen and Data Collection Research
Joined Bio
- Location
- Lexington, MA
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Acellular Dermal Matrix Investigation in Breast Reconstruction
RTI Surgical
- Location
- Little Rock, AR + 11 other US sites
- Eligibility basics
- Ages 22+ · Women only
- RecruitingHealthy volunteers
Mobility Performance in Daily Activities Among Children Wearing Spectacle Lenses
SightGlass Vision, Inc.
- Location
- Glendale, AZ
- Eligibility basics
- Ages 6–12
- RecruitingHealthy volunteers
Children's Viewing Behavior
SightGlass Vision, Inc.
- Location
- Bloomington, IN
- Eligibility basics
- Ages 7–14
- RecruitingHealthy volunteersPhase 3
REVEAL Study - Diagnostic Testing for PTSD Using the Senseye Diagnostic Tool
Senseye, Inc.
- Location
- Aurora, CO + 2 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
ALPCO Calprotectin CLIA Assay - Measurement of Calprotectin Levels in Human Stool
American Laboratory Products Company
- Location
- Miami, FL + 1 other US site
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
A Study Evaluating Oral-Health-Related Quality of Life and Treatment Patterns Among Dentin Hypersensitivity Sufferers
HALEON
- Location
- Las Vegas, NV
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Generative AI Plan for Care Lab Study
Fitbit LLC
- Location
- Mountain View, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Evaluation of Fractional Ablative Laser Treatment for Skin Conditions
Sciton
- Location
- Boca Raton, FL
- Eligibility basics
- Ages 18–85
- 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
iVS-1 Probiotic Intervention Targeting Biological Aging in Midlife Adults
Synbiotic Health
- Location
- New Port Richey, FL
- Eligibility basics
- Ages 40–75
- RecruitingHealthy volunteersPhase 4
Comparing Sarecycline and Doxycycline Effects on the Skin and Gut Bacteria in Acne.
Integrative Skin Science and Research
- Location
- Sacramento, CA
- Eligibility basics
- Ages 9+
- RecruitingHealthy volunteers
Rezdiffra Pregnancy and Lactation Registry
Madrigal Pharmaceuticals, Inc.
- Location
- West Conshohocken, PA
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteers
Safety and Effectiveness Evaluation of the High-intensity Focused Ultrasound Device for Lifting Lax Submental and Neck Tissue
CLASSYS Inc.
- Location
- Los Angeles, CA + 4 other US sites
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteersPhase 3
A Study to Evaluate Tradipitant on Treating Nausea and Vomiting Induced by GLP-1R Agonist Use
Vanda Pharmaceuticals
- Location
- Los Angeles, CA + 2 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Development of a Database to Investigate Digital and Blood-Based Biomarkers and Their Relationship to Tau and Amyloid PET Imaging in Older Participants Who Are Cognitively Normal (CN), Have Mild Cognitive Impairment…
GAP Innovations, PBC
- Location
- Atlantis, FL + 18 other US sites
- Eligibility basics
- Ages 60–90
- RecruitingHealthy volunteers
Examining Olive Oil Extract on Knee Comfort and Function
Applied Food Sciences Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 40–75
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