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 161–180 of 581 studies
Recruiting
Not Applicable
Measuring Nerve Activity in Small Human Intestinal Biopsies in IBS (Irritable Bowel Syndrome)
HealthyIBS
KU Leuven99,999,999 enrolled1 locationNCT01912313
Recruiting
Not Applicable
Impact 360 for Healthy Agers
Healthy Aging
University of British Columbia60 enrolled1 locationNCT06516146
Recruiting
Not Applicable
Kaempferol Absorption and Pharmacokinetics Evaluation
longevityHealthy VolunteersNo Disease+2 more
University of Pittsburgh120 enrolled3 locationsNCT07322406
Recruiting
Not Applicable
Group-Based Exercise Intervention to Prevent Cognitive and Motor Decline
Older AdultsHealthy
University of Bergamo158 enrolled2 locationsNCT07494149
Recruiting
Not Applicable
Developing a Pipeline to Employ RNA-Seq as a Complementary Diagnostic Tool in Rare Diseases
HealthyAtypical Hemolytic Uremic SyndromeMembranoproliferative Glomerulonephritis+1 more
Mario Negri Institute for Pharmacological Research105 enrolled1 locationNCT05996731
Recruiting
Not Applicable
Subthreshold Vestibular Stimulation as a Strategy for Rehabilitation
Healthy (Controls)Bilateral Vestibular HypofunctionVestibular Hypofunction+1 more
Creighton University48 enrolled1 locationNCT06732440
Recruiting
Not Applicable
The Metabolic Effects of Oral Tributyrin Administration
Healthy Overweight/Obese
University of Aarhus12 enrolled1 locationNCT07463495
Recruiting
Not Applicable
An Analysis of Healthy Caucasian Knees
Healthy Volunteers
Universitaire Ziekenhuizen KU Leuven200 enrolled1 locationNCT07470671
Recruiting
Not Applicable
A Community Health Education Intervention for Increasing Community-driven Actions to Reduce the Cancer Burden in Western New York
Healthy
Roswell Park Cancer Institute200 enrolled1 locationNCT06681077
Recruiting
Not Applicable
Effects of Salbutamol in Athletes and Implications for Screening and Sports
AsthmaHealthyEffect of Drug
University of British Columbia64 enrolled1 locationNCT07037511
Recruiting
Not Applicable
Contactless Human-Machine-Interface Based on Magnetometers for Consumer Applications
Healthy Adult
Robert Bosch GmbH12 enrolled1 locationNCT07466264
Recruiting
Not Applicable
Concurrent TMS-fMRI
DepressionHealthy Control
Jing Jiang97 enrolled1 locationNCT06633913
Recruiting
Not Applicable
Impact of Phenylalanine Elevations on Brain and Cognition in Adult PKU Carriers
HealthyCarrier of Phenylketonuria
University of Missouri-Columbia36 enrolled1 locationNCT07220265
Recruiting
Not Applicable
Study Evaluating the Effect of Humiome® Post LB on Stress, Anxiety, and Cognition in Aging Adults
Healthy Aging
dsm-firmenich Switzerland AG236 enrolled3 locationsNCT07110896
Recruiting
Not Applicable
L-serine and Strength Training in the Elderly
longevityHealthy AgeingStrength Training Effects+6 more
University of Vienna126 enrolled1 locationNCT07466290
Recruiting
Not Applicable
A Clinical Trial to Investigate the Efficacy of Bragg Apple Cider Vinegar on Blood Glucose Control in a Healthy Adult Population
Blood GlucoseHealthy
Bragg Live Food Products24 enrolled1 locationNCT07043478
Recruiting
Not Applicable
Fructose Intestinal Gluconeogenesis
Healthy ParticipantsObese But Otherwise Healthy Participants
Touro University, California40 enrolled1 locationNCT07209202
Recruiting
Not Applicable
The Comparison of Different Passive Warm-Up Methods Prior to Exercise
Healthy AdultsYoung
Istanbul University - Cerrahpasa100 enrolled1 locationNCT07454551
Recruiting
Not Applicable
Effect of Transcutaneous Auricular Vagus Nerve Stimulation (taVNS) on Plasma Insulin Levels
Healthy
Indiana University30 enrolled1 locationNCT06597149
Recruiting
Not Applicable
Dysautonomia in Children With Type 1 Diabetes
Healthy VolunteerDysautonomia in Children With Type 1 Diabetes
Centre Hospitalier Universitaire de Saint Etienne100 enrolled1 locationNCT07455994