Location · Washington, DC
Clinical trials in Washington, DC
477 recruiting studies have a site in the Washington area, and 296 of them accept healthy volunteers. The area includes Bethesda, MD, Rockville, MD, Silver Spring, MD, Gaithersburg, MD, Chevy Chase, MD, Arlington, VA and nearby cities.
477 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteers
Perception, Sensation, Cognition and Action in Humans
National Eye Institute (NEI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 13–65
- RecruitingHealthy volunteers
Natural History and Biospecimen Acquisition for Children and Adults With Rare Solid Tumors
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 2 other US sites
- Eligibility basics
- Ages 1 mo+
- RecruitingHealthy volunteers
Long-Term Follow-Up of Survivors of Pediatric Cushing Disease
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–90
- RecruitingHealthy volunteers
Unraveling the Mechanisms Underlying Primary Sclerosing Cholangitis Through a Multidisciplinary, Integrative Research Approach
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Cognitive Aftereffects of Neurotoxicity in Children and Young Adults With Relapsed/Refractory Hematologic Malignancies Who Receive CAR T-cell Therapy
National Cancer Institute (NCI)
- Location
- Los Angeles, CA + 2 other US sites
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Comprehensive Molecular and Clinical Evaluation of Pediatric and Adult MDS
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 0 mo–120
- RecruitingHealthy volunteers
Rare Tumors and Cancer Predisposition in Individuals and Families
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Acceptance and Commitment Therapy for Caregivers of Children With a RASopathy: An Internal Pilot Feasibility Study and Follow-up Randomized Controlled Trial
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Prevention of Postpartum Hemorrhage With Tranexamic Acid
Inova Health Care Services
- Location
- Washington D.C., DC + 1 other US site
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteers
NIH Investigative Deep Phenotyping Study of Gulf War Veteran Health (Project NIH IN-DEPTH)
National Institute of Neurological Disorders and Stroke (NINDS)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 48–70
- RecruitingHealthy volunteers
Collection of Blood, Bone Marrow, Skin, Saliva, and Stool Samples From Healthy Volunteers Used for Comparative Analysis of Myeloid Malignancies
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Assessing and Improving Quantitative Magnetic Resonance Imaging Metrics in Human Subjects
National Institute of Neurological Disorders and Stroke (NINDS)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Hemoglobin Testing in Pregnant Patients
Inova Health Care Services
- Location
- Falls Church, VA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteers
Natural History of Treated Neurocysticercosis and Long-Term Outcomes
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 3–99
- RecruitingHealthy volunteers
Studies of the Pathogenesis of HIV Infection in Human Peripheral Blood Cells and/or Body Fluids in People Living With and Without HIV
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Familial Mediterranean Fever and Related Disorders: Genetics and Disease Characteristics
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2 mo–115
- RecruitingHealthy volunteers
Recruitment and Apheresis Collection of Peripheral Blood Hematopoietic Stem Cells, Mononuclear Cells and Granulocytes
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
MRI Study of Musculoskeletal Function
National Institutes of Health Clinical Center (CC)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 5–95
- RecruitingHealthy volunteers
Long-term Evaluation and Follow-up Care of Patients Treated With Stem Cell Transplants
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 7–80
- RecruitingHealthy volunteers
MRS Measurement of Glutamate and GABA Metabolism in Brain
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Diagnosis and Treatment of Patients With Inborn Errors of Metabolism
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 1 mo–115
- RecruitingHealthy volunteers
Collection and Analysis of Blood, Bone Marrow, and Buccal Mucosa Samples From Healthy Volunteers
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 8–99
- RecruitingHealthy volunteers
Collection of Lung Fluid and Tissue Samples for Research
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 5–100
- RecruitingHealthy volunteers
Studies of Skin Microbes in Healthy People and in People With Skin Conditions
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–100