Under $500 Paid Clinical Trials
580 studies
Dietary, survey, and observational studies typically compensate under $500 per participant.
Compensation amounts shown are typical ranges for this study type — not guaranteed amounts. Actual compensation is set by each study sponsor and documented in the informed consent form. ClinicalTrials.gov does not include a structured compensation field.
Showing 41–60 of 580 studies
Recruiting
Not Applicable
Muscle Vibration as a Countermeasure Against Hypoactivity-induced
Healthy Volunteer StudyVibration TherapyHypoactivity
Centre Hospitalier Universitaire de Saint Etienne42 enrolled1 locationNCT07021079
Recruiting
Not Applicable
Neuromodulation-assisted Ego-disengagement: The NEURO-EGO Study Stage 1
Healthy
University of Wisconsin, Madison22 enrolled1 locationNCT06601686
Recruiting
Not Applicable
Cybersickness Prevention and Mitigation in Virtual Reality for Healthy Volunteers
Virtual RealityHealthy Volunteers
National Human Genome Research Institute (NHGRI)150 enrolled2 locationsNCT06552754
Recruiting
Not Applicable
Showers and Stress
Healthy Volunteers
Catholic University of the Sacred Heart120 enrolled1 locationNCT07611422
Recruiting
Not Applicable
Gait Analysis Parameter and Upper Limb Evaluation in Control Participants
Healthy Participants
Centre Hospitalier Universitaire de Liege200 enrolled1 locationNCT07136506
Recruiting
Not Applicable
Testing Non-Invasive Spinal Stimulation Devices
Healthy Participants
Gail Forrest10 enrolled1 locationNCT07217314
Recruiting
Not Applicable
Adversity, Brain and Opioid Use Study
HealthyOpioid-use Disorder
University of Michigan185 enrolled1 locationNCT06355778
Recruiting
Not Applicable
Sheba Healthspan Research Population (SHARP) Trial - Sheba Longevity Center Diagnostic and Intervention Protocol to Lower Biological Age in Older Adults
Healthy AgingBiological AgeIntrinsic Capacity+2 more
Sheba Medical Center1,500 enrolled1 locationNCT07596576
Recruiting
Not Applicable
Fisetin Supplementation for Healthy Aging
Healthy
Ove Andersen120 enrolled1 locationNCT07195318
Recruiting
Not Applicable
Metabolome and Gut Microbiome Changes During Smoking Cessation in Long-term Drug Therapy in a Therapeutic Community
healthy adult participantsSubstance Use Disorder (SUD)Alcohol Use Disorder (AUD)+1 more
Sigmund Freud PrivatUniversitat150 enrolled3 locationsNCT06803706
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
Not Applicable
Overcoming the Barriers to Effective Transcranial Temporal Interference Stimulation in Humans
healthy adult participants
Northeastern University30 enrolled1 locationNCT07593859
Recruiting
Not Applicable
Postprandial Triglyceride Concentrations Across Menstrual Cycle Phases
Healthy Adult Females
University of Ottawa12 enrolled1 locationNCT07459465
Recruiting
Not Applicable
Periscope Phase C Bordetella Pertussis Human Challenge Study With Delayed Antibiotic Therapy for 6 Weeks
Healthy Volunteer Study
University of Southampton72 enrolled1 locationNCT05847322
Recruiting
Not Applicable
Effects of Carbon Fiber Insoles on CMJ and Sprint Performance
PerformancePreventionHealthy+4 more
Benjamín Cuenca Valero38 enrolled1 locationNCT07589231
Recruiting
Not Applicable
Computerized Cognitive Training in Healthy Older Adults and Mild Cognitive Impairment
Mild Cognitive Impairment (MCI)Healthy Aging
Universidad Antonio de Nebrija156 enrolled2 locationsNCT07598409
Recruiting
Not Applicable
Effects of Isocapnic Respiratory Muscle Endurance Training in Healthy Adults
Healthy Adults
University of British Columbia32 enrolled1 locationNCT07103291
Recruiting
Not Applicable
Detection of EEG-Based Biomarkers of Chronic Low Back Pain
HealthyChronic Low-back Pain
Stanford University130 enrolled1 locationNCT06025201
Recruiting
Not Applicable
Exoskeleton-Assisted Mobility in Aging and in Parkinson's Disease
Healthy AgingParkinson's Disease (PD)
Centre intégré de santé et de services sociaux de l'Outaouais26 enrolled1 locationNCT07567482
Recruiting
Not Applicable
Tumour Cell Response to Acute Aerobic Exercise in Breast Cancer Survivors: Modulatory Effects of Exercise Type and Intensity
Breast Cancer SurvivorsAcute ExerciseBreast Cancer Cell Lines+2 more
Riga Stradins University40 enrolled1 locationNCT07439458