Normal Clinical Trials

231 recruitingLast updated: July 25, 2026

There are 231 actively recruiting normal clinical trials across 41 countries. Studies span Not Applicable, Phase 2, Phase 1, Phase 3, Phase 4, Early Phase 1. Top locations include Bethesda, Maryland, United States, Baltimore, Maryland, United States, Boston, Massachusetts, United States. Updated daily from ClinicalTrials.gov.


Normal Trials at a Glance

231 actively recruiting trials for normal are listed on ClinicalTrialsFinder across 6 cities in 41 countries. The largest study group is Not Applicable with 84 trials, with the heaviest enrollment activity in Bethesda, Baltimore, and Boston. Lead sponsors running normal studies include National Institute of Neurological Disorders and Stroke (NINDS), Chinese University of Hong Kong, and Helsinki University Central Hospital.

Treatments under study

About Normal Clinical Trials

Looking for clinical trials for Normal? There are currently 1 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Normal trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Normal clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 231 trials

Recruiting
Not Applicable

Sociocultural & Biobehavioral Influences on Pain Expression and Assessment

PainHealthy VolunteersNormal Physiology
National Center for Complementary and Integrative Health (NCCIH)700 enrolled1 locationNCT03258580
Recruiting

Clinical and Scientific Assessment of Pain and Painful Disorders

PainNormal Physiology
National Center for Complementary and Integrative Health (NCCIH)10,000 enrolled1 locationNCT02707029
Recruiting
Early Phase 1

Developing Transcranial Neuromodulation Protocols for Learning and Decision-Making

Normal Physiology
National Institute on Drug Abuse (NIDA)600 enrolled1 locationNCT06561828
Recruiting
Not Applicable

MRS Measurement of Glutamate and GABA Metabolism in Brain

Normal Physiology
National Institute of Mental Health (NIMH)200 enrolled1 locationNCT00109174
Recruiting

Tissue Procurement for Biomedical Research

Normal Volunteers
National Institute on Aging (NIA)5,000 enrolled1 locationNCT00182858
Recruiting
Not Applicable

Neural and Psychological Mechanisms of Pain Perception

PainHealthy VolunteersNormal Physiology
National Center for Complementary and Integrative Health (NCCIH)550 enrolled1 locationNCT02446262
Recruiting

Natural History of the Human Biological Response to Environmental Exposure and Injury

Metabolic DiseaseInflammationNormal Controls
National Institute of Environmental Health Sciences (NIEHS)2,000 enrolled1 locationNCT04888923
Recruiting
Not Applicable

Development Of Neuroimaging Methods To Assess The Neurobiology Of Addiction

Normal Physiology
National Institute on Alcohol Abuse and Alcoholism (NIAAA)192 enrolled1 locationNCT02535702
Recruiting

Collection of Bone Marrow Aspirate From Normal Volunteers

Normal Aging
National Institute on Aging (NIA)2,000 enrolled1 locationNCT03949647
Recruiting

Turkish Version of the BRIEF-Hammersmith Infant Neurological Examination (HINE)

PediatricsNeurodevelopment OutcomeNeurological Abnormality
Kahramanmaras Sutcu Imam University120 enrolled1 locationNCT07182474
Recruiting

Influence of Brain Oscillation-Dependent TMS on Motor Function

HealthyStrokeNormal Physiology+1 more
National Institute of Neurological Disorders and Stroke (NINDS)114 enrolled1 locationNCT03288220
Recruiting
Not Applicable

Impact of Sex and Age on Non-visual Light Input That Affects Sleep and Circadian Rhythms

Normal Physiology
Massachusetts General Hospital48 enrolled1 locationNCT05829044
Recruiting

Hertel Exophthalmometry Values in Mexican Adults

ExophthalmometryNormal Exophthalmometric Values
Instituto de Oftalmología Fundación Conde de Valenciana300 enrolled1 locationNCT07705061
Recruiting
Not Applicable

Office Hysteroscopy in Postmenopausal Women: A Randomized Trial of Cervical Preparation Strategies

Postmenopausal WomenAbnormal Uterine Bleeding (AUB)Postmenopausal Bleeding+2 more
Faculty of Medicine of Tunis120 enrolled1 locationNCT07697781
Recruiting
Phase 3

A Study to Test Whether Nerandomilast Can Help Slow Down Changes in the Lung in People With a Family History of Pulmonary Fibrosis

Interstitial Lung DiseasesFamilial Pulmonary FibrosisInterstitial Lung Abnormalities
Boehringer Ingelheim80 enrolled56 locationsNCT07201922
Recruiting

Menstrual Cycle Symptoms and Female Health

Menstrual CyclePremenstrual SyndromeOvulation Disorder+3 more
Universidad Rey Juan Carlos400 enrolled1 locationNCT07699224
Recruiting

Clinical Efficacy And Safety of Dydrogesterone In The Treatment Of Abnormal Uterine Bleeding During Puberty

Abnormal Uterine Bleeding (AUB)Ovulation Dysfunction
Guangdong Women and Children Hospital240 enrolled1 locationNCT07703488
Recruiting

A Prospective Natural History Study of Lymphatic Anomalies

Lymphatic AbnormalitiesLymphatic Diseases
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)1,200 enrolled2 locationsNCT05731141
Recruiting

MRI Study of Musculoskeletal Function

Patellofemoral Pain SyndromeAbnormalitiesImaging
National Institutes of Health Clinical Center (CC)750 enrolled1 locationNCT00051857
Recruiting

Development of 3T Magnetic Resonance Research Methods for NIA Studies

Normal Physiology
National Institute on Aging (NIA)1,000 enrolled1 locationNCT01324206