Under $500 Paid Clinical Trials
581 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 241–260 of 581 studies
Recruiting
Not Applicable
OCTA in Cardiovascular Disease and Healthy Controls
Healthy ParticipantsPatients With Cardiovascular Disease
University of Erlangen-Nürnberg Medical School64 enrolled1 locationNCT07359664
Recruiting
Not Applicable
Effects of 12-Week Balanced Diet on Body Composition & Metabolic Parameters in Twins
Healthy Adults
University of Veterinary and Animal Sciences, Lahore - Pakistan60 enrolled1 locationNCT07362550
Recruiting
Not Applicable
Neural Adaptations to Metronome-Paced Strength Training
Healthy
Egas Moniz - Cooperativa de Ensino Superior, CRL60 enrolled1 locationNCT06532786
Recruiting
Not Applicable
Power Nap With TES-TI
Healthy VolunteerNon-restorative Sleep
University of Wisconsin, Madison25 enrolled1 locationNCT07090135
Recruiting
Not Applicable
Effects of Caffeinated Beverages on Well-being
HealthyCaffeineBeverage Intake
GUAYAKI SUSTAINABLE RAINFOREST PRODUCTS, INC.150 enrolled1 locationNCT07357818
Recruiting
Not Applicable
Intercostal Mobilization and Respiratory Outcomes
Healthy Volunteers
Abant Izzet Baysal University90 enrolled1 locationNCT07352722
Recruiting
Not Applicable
Investigating Brain Function in People With and Without Visual Snow Syndrome Using Adaptation to Visual Stimuli
HealthyMigraineVisual Snow Syndrome
University of Minnesota100 enrolled1 locationNCT06961864
Recruiting
Not Applicable
Nourish Clinical Trial
HealthyNutrition
Case Western Reserve University180 enrolled1 locationNCT06947954
Recruiting
Not Applicable
The Effect of Rhythmic Auditory Stimulation on VOR Gain Adaptation Among Healthy Adults - A Randomized Clinical Trial "VOR - Vestibulo-ocular Reflex"
Healthy
University of Haifa12 enrolled1 locationNCT07347470
Recruiting
Not Applicable
A Clinical Trial to Examine Lysoveta on Cognitive Function in Healthy Adults With Self-perceived Memory Problems
memory problemsHealthy
Aker BioMarine Human Ingredients AS138 enrolled1 locationNCT07034794
Recruiting
Not Applicable
Cell Free DNA in Cardiac Sarcoidosis
HealthySarcoidosisST Elevation Myocardial Infarction+1 more
Nabeel Hamzeh120 enrolled2 locationsNCT03858777
Recruiting
Not Applicable
Accuracy Evaluation of the Owlet OSS 3.0-M1 Sensor in Toddlers and Preschoolers
Healthy
Owlet Baby Care, Inc.90 enrolled1 locationNCT07321938
Recruiting
Not Applicable
A Study to Evaluate the Impact of Lactobacillus Rhamnosus GG on Proton Pump Inhibitor-Induced Gut Dysbiosis
Healthy
Mayo Clinic30 enrolled1 locationNCT05517928
Recruiting
Not Applicable
A Study to Evaluate Non-significant Risk Operation Magnetic Resonance Imaging for MRI Guided Ablation
Healthy
Mayo Clinic100 enrolled1 locationNCT04880226
Recruiting
Not Applicable
Effects of PeptiSleep on Sleep Quality in Healthy Adults
Wearable TechnologySleepHealthy Participants+2 more
Nuritas Ltd120 enrolled1 locationNCT07258433
Recruiting
Not Applicable
Characterization of Gastric Evoked Potentials
Healthy
University of Pittsburgh155 enrolled1 locationNCT05924009
Recruiting
Not Applicable
Pistachio Snacking and Metabolic Flexibility
Overweight or obeseHealthy ParticipantsObese Patients (BMI ≥ 30 kg/m²)+4 more
University of South Carolina60 enrolled1 locationNCT07340125
Recruiting
Not Applicable
Effect of Exercise on Appetite in Response to Meals During Energy Restriction
Healthy
University of Glasgow14 enrolled1 locationNCT06895837
Recruiting
Not Applicable
Effect of Exercise on Appetite in Response to Meals
Healthy
University of Glasgow14 enrolled1 locationNCT06096233
Recruiting
Not Applicable
Carotenoid Supplementation and Retinal Health in Healthy Adults
Healthy
Pacific University50 enrolled1 locationNCT07314411