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7,114 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 28, 2026). No sign-up needed.
Most recently updated studies · page 27 of 297
- RecruitingHealthy volunteersPhase 1
Clinical Trial to Evaluate the Safety and Immunogenicity of a Priming Regimen of 426c.Mod.Core-C4b Followed by HxB2.WT.Core-C4b Boosts, Both Adjuvanted With 3M-052 AF + Alum, in Adult Participants Without HIV and in…
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Decatur, GA + 1 other US site
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 1/Phase 2
Advair HFA in Healthy and HAPE Predisposed Subjects
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteersEarly Phase 1
Vocal Emotion Communication With Cochlear Implants
Father Flanagan's Boys' Home
- Location
- Tempe, AZ + 2 other US sites
- Eligibility basics
- Ages 6–80
- RecruitingHealthy volunteersPhase 1
1726-nm Laser for Acne Inversa (Hidradenitis Suppurativa)
Wynn Medical Center
- Location
- Rosemead, CA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersEarly Phase 1
Sympathetic Vascular Transduction Across the Menopause Transition: Contributing Mechanisms
University of Missouri-Columbia
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–70 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Dex +/- Caffeine Sedation in a Post-MRI Recovery in a Pediatric Population
University of Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 3–12
- RecruitingHealthy volunteersPhase 1
Azithromycin Before Induction
Arrowhead Regional Medical Center
- Location
- Colton, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Role of Neural and Hormonal Regulation Factors on Insulin Secretion After Gastric Bypass Surgery
The University of Texas Health Science Center at San Antonio
- Location
- San Antonio, TX + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Glucagon-like Peptide 1, Glucose Metabolism and Gastric Bypass
The University of Texas Health Science Center at San Antonio
- Location
- San Antonio, TX + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
The Effects of Bariatric Surgeries on Glucose Metabolism
The University of Texas Health Science Center at San Antonio
- Location
- San Antonio, TX + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Assess Performance Attributes and Acceptability of Non-medicated Intravaginal Rings Among Sexually Active Women in Atlanta, GA
Population Council
- Location
- Atlanta, GA
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sensitivity of Angiotensin II Type II Receptors in Women Following Preeclampsia
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Comparing Approaches to Assess Nitric Oxide-dependent Cutaneous Vasodilation
University of Iowa
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–30
- RecruitingHealthy volunteersEarly Phase 1
Acute Progesterone Suppression of Wake vs. Sleep Luteinizing Hormone Pulse Frequency in Pubertal Girls With and Without Hyperandrogenism
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 10–17 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Hyperandrogenemia and Altered Day-night LH Pulse Patterns
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 10–17 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Study to Assess Potential Impairments in Estradiol Augmentation of Gonadotropin Secretion in Polycystic Ovary Syndrome
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 18–30 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Does Spironolactone Normalize Sleep-wake Luteinizing Hormone Pulse Frequency in Pubertal Girls With Hyperandrogenism?
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 10–17 · Women only
- RecruitingHealthy volunteersOvernight stay mentioned
Effects of Using a Storybook, to Explain Leukemia to Children Versus the Standard Child Life Intervention, on Parental Stress.
Children's Hospital Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 3+
- 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 1/Phase 2
Immunogenicity of Yellow Fever Vaccine 17D in Adults With Prior 17D Vaccination
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 20–49
- RecruitingHealthy volunteersEarly Phase 1
Intradermal Influenza Vaccination
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteersPhase 4Overnight stay mentioned
Simethicone as Part of ERAS in Bariatric Surgery Patients
Madigan Army Medical Center
- Location
- Tacoma, WA
- Eligibility basics
- Ages 18–89
- 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
Data source: daily sync of the ClinicalTrials.gov API. How we list studies