Healthy volunteers · Arizona
Studies for healthy volunteers in Arizona
136 studies have at least one recruiting site in Arizona. These studies say in their official record that they accept healthy volunteers. Many are Phase 1 studies that test how a new medicine is absorbed and tolerated; others recruit healthy people as a comparison group alongside patients.
136 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteers
SUV PDL1/PD1 in Sun Damaged & Sun Protected Human Skin of Participants
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
The Effects of Exercise on Immune Phenotype of Indolent Non-Hodgkin Lymphoma and Chronic Lymphocytic Leukemia Patients
Mayo Clinic
- Location
- Scottsdale, AZ + 1 other US site
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Multi-Cancer Detection Observational Cohort Study
Mayo Clinic
- Location
- Scottsdale, AZ + 2 other US sites
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Pyloric Sphincter Abnormalities in Patients With Gastroparesis Symptoms
Johns Hopkins Bloomberg School of Public Health
- Location
- Scottsdale, AZ + 4 other US sites
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
Addressing Disparities in Colorectal Cancer Screening in Black and Underserved Phoenix Communities
Mayo Clinic
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 45+
- RecruitingHealthy volunteersPhase 3
Evaluating Whether an Educational Website Called Current Together After Cancer (CTAC) Improves Follow-up Care for Colorectal Cancer Survivors
SWOG Cancer Research Network
- Location
- Phoenix, AZ + 374 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Identification and Differentiation of Thyroid Nodules by Acoustic Imaging and Viscoelastic Parameters
Mayo Clinic
- Location
- Scottsdale, AZ + 2 other US sites
- Eligibility basics
- Ages 8+
- RecruitingHealthy volunteersPhase 4
Reduced Immunosuppression in Older Renal Transplant Recipients With Trugraf®/TRAC Monitoring (RIOT Trial): A Prospective, Randomized, Multicenter Trial.
Mayo Clinic
- Location
- Phoenix, AZ + 2 other US sites
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteers
Native Spirit: Significant Aim 3: Intervention
Arizona State University
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 12–17
- RecruitingHealthy volunteers
Media and Mental Health
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Study of Neurodegeneration and Neuronal Fluctuations in Lewy Body Disease and Alzheimer's Disease
Mayo Clinic
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 50–95
- RecruitingHealthy volunteers
Mapping of Electrical Properties in the Brain
Mayo Clinic
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Investigating the Link Between Type 2 Immunity and NAFLD in Human Obesity
Mayo Clinic
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 30–70
- RecruitingHealthy volunteers
Adequate Hydration and Health Outcomes
Arizona State University
- Location
- Phoenix, AZ
- Eligibility basics
- Ages 20–65
- RecruitingHealthy volunteers
Stand & Move at Work II: Effectiveness and Implementation of a Worksite Wellness Program
Arizona State University
- Location
- Phoenix, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Study to Evaluate the Impact of Lactobacillus Rhamnosus GG on Proton Pump Inhibitor-Induced Gut Dysbiosis
Mayo Clinic
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Alzheimer's Prevention Registry: A Program to Accelerate Enrollment Into Studies
Banner Health
- Location
- Phoenix, AZ
- Eligibility basics
- Ages 18–110
- RecruitingHealthy volunteersPhase 2
Omega-3D: Omega-3 for Diet-Driven Health Disparities
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteers
Target ALS Biomarker Study; Longitudinal Biofluids, Clinical Measures, and At Home Measures
Target ALS Foundation, Inc.
- Location
- Phoenix, AZ + 9 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Primary Prevention of Obesity in American Indian Youth in Rural Tribal Schools
Northern Arizona University
- Location
- Flagstaff, AZ
- Eligibility basics
- Ages 8–10
- RecruitingHealthy volunteers
Understanding of Genetics by Men at Risk for Prostate Cancer
Mayo Clinic
- Location
- Phoenix, AZ + 2 other US sites
- Eligibility basics
- Ages 40–95 · Men only
- RecruitingHealthy volunteers
Multi-Cancer Early Detection (MCED) of Firefighters
Vincere Cancer Center
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Caffeine Optimization Versus Standard Caffeine Dosage (2B-2)
University of Arizona
- Location
- Tucson, AZ + 1 other US site
- Eligibility basics
- Ages 18–39
- RecruitingHealthy volunteers
Effect of Morning Light Exposure on Mood
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18–60
Who these studies look for
“Healthy” is decided at screening, not by you. Sites usually check vital signs, blood and urine tests, an ECG, your medications and sometimes your BMI or smoking status. A study can still turn you away for reasons that have nothing to do with being unwell, such as timing or a full roster.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Do healthy volunteer studies pay?
Many do, because volunteers give up time and follow strict schedules, but amounts are set by each study and are usually only confirmed by the research site. When a record states an amount we show the exact wording; otherwise we say compensation is not disclosed.
What happens at a screening visit?
Expect consent paperwork first, then a health questionnaire, vital signs, blood and urine samples and often an ECG. You can ask questions and withdraw at any time, before or after you sign.