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California Paid Clinical Trials
A listing of 5602 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
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California is currently home to 5602 active clinical trials, seeking participants for engagement in research studies. These trials take place at a variety of cities in the state, including Los Angeles, San Francisco, San Diego and Sacramento. Whether you're a healthy volunteer interested in paid medical research or someone seeking trials related to a specific condition, the state offers a diverse array of opportunities in your vicinity.
Featured Trial
Healthy Participants Needed (Colonoscopy + Cancer Screening)
Recruiting
Earn $325 - $475 in electronic payment card compensation for your time and effort by participating in a clinical study to develop a blood test that may one day help screen for colon cancer. Take a quick quiz to see if you qualify.
Conditions:
Healthy
Healthy Volunteers
Healthy Subjects
Healthy Volunteer
Healthy Participants
Featured Trial
Buy Retatrutide Online Through Celia
Recruiting
Retatrutide (formerly M25) is an investigational peptide being studied for its potential in supporting weight management and metabolic health. It acts on GLP-1, GIP, and glucagon receptors to influence appetite, energy regulation, and fat metabolism.
Conditions:
Healthy
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Lose 20% of Body Weight With GLP-1's
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to tirzepatide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
Semaglutide and Tirzepatide are advanced GLP-1 medications designed to support weight management and metabolic health. They work by targeting GLP-1 receptors in the body, helping regulate appetite, improve blood sugar control, and support sustainable weight loss (up to 22% of body weight).
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Semaglutide and Tirzepatide are advanced GLP-1 medications designed to support weight management and metabolic health. They work by targeting GLP-1 receptors in the body, helping regulate appetite, improve blood sugar control, and support sustainable weight loss (up to 22% of body weight).
Get $50 off your first order using promo code: policy-lab-50
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Featured Trial
Depression Clinical Trial
Recruiting
Join us in researching a potential investigational treatment for Depression. Reimbursement for study-related expenses may be available to you.
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Conditions:
Depression
Major Depressive Disorder
Depressive Disorder
Depressive Symptoms
Depressive Disorder
Featured Trial
Stroke Clinical Study
Recruiting
A clinical study for people that suffer with Stroke
Conditions:
Stroke
GATE-251 or Placebo for the Reduction of Symptoms of Major Depressive Disorder
Recruiting
The goal of this clinical trial is to learn if GATE-251 works to treat depression in adults. It will also learn about the safety of GATE-251. The main questions it aims to answer are:
Does GATE-251 reduce depression scores in participants compared to participants who take a placebo (a look-alike tablet that contains no GATE-251)?
What medical problems are observed in participants who take GATE-251?
Participants will take one tablet of GATE-251 or placebo every week for 6 weeks. Participants w... Read More
Gender:
ALL
Ages:
Between 18 years and 64 years
Trial Updated:
06/17/2025
Locations: Wr-Pri, Llc, Encino, California
Conditions: Major Depressive Disorder
Effectiveness of Two Aspirin Doses for Prevention of Hypertensive Disorders of Pregnancy: ASPIRIN TRIAL
Recruiting
The overall goal of this large, pragmatic, comparative effectiveness trial is to test the hypothesis that among at-risk individuals, 162 mg/day aspirin is superior to 81 mg/day in preventing Hypertensive disorders of pregnancy (HDP), and that there are multiple factors associated with adherence with aspirin therapy that will be important to identify to enable optimal implementation of study findings and population-level benefits.
Gender:
FEMALE
Ages:
Between 14 years and 35 years
Trial Updated:
06/17/2025
Locations: Cedars Sinai Medical Center, Los Angeles, California
Conditions: Hypertensive Disorders of Pregnancy, Preeclampsia, Gestational Hypertension
An Extension Study for Patients Previously Enrolled in Studies With Pelabresib
Recruiting
The purpose of this study is to evaluate the long-term safety and the clinical benefit of pelabresib in patients with hematological and/or solid tumor indications or advanced malignancies. Additionally, participants previously enrolled in studies with pelabresib who received placebo or participants who discontinued pelabresib (for any other reason than participating in this extension study), may be enrolled in this extension study to evaluate the survival and leukemia-free survival (for patients... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: Hematologic Malignancy/Stem (Department of Medicine, Division of Hematology/Oncology), Los Angeles, California
Conditions: Hematologic Malignancy, Solid Tumor, Advanced Malignancies
Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-3)
Recruiting
This U.S. Phase 3 clinical trial is designed to evaluate the efficacy, safety, and tolerability of the acute intranasal (i.n.) administration of Fasedienol Nasal Spray (fasedienol) (3.2 µg) to relieve symptoms of acute anxiety in adult subjects ages 18 through 65 with Social Anxiety Disorder induced by a public speaking challenge (PSC) in a clinical setting. In addition, safety and tolerability of i.n. administration of 3.2 µg of fasedienol, as-needed, up to 6 times per day for up to 12 months,... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/17/2025
Locations: Vistagen Clinical Site, Lafayette, California
Conditions: Social Anxiety Disorder
A Study to Investigate the Safety and Efficacy of NST-628 Oral Tablets in Subjects With Solid Tumors
Recruiting
This is a two-part Phase 1, open label, multi-center, single arm, non-randomized, multiple dose, safety, pharmacokinetic (PK) and preliminary efficacy study of single agent NST-628 in adult patients with MAPK pathway mutated/dependent advanced solid tumors who have exhausted standard treatment options.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, California
Conditions: Oncology, MEK Mutation, RAF Gene Mutation, Ras (KRAS or NRAS) Gene Mutation, Melanoma, NSCLC, Glioma, Solid Tumor, Adult, MAPK Pathway Gene Mutation
Effects of Goji vs. Fiber on Macular Degeneration
Recruiting
The goal of this project is to conduct a clinical trial in 60 participants ranging from age 65-95 who are at risk for age-related macular degeneration (AMD). The study will evaluate the effects of 14g of goji berry intake or an equivalent amount and type of fiber, five days a week for six months, on visual health, gut microbiome profiles, skin carotenoid measures, and lipoprotein profiles.
Gender:
ALL
Ages:
Between 65 years and 95 years
Trial Updated:
06/17/2025
Locations: UC Davis Eye Center, Tschannen Eye Institute, Sacramento, California
Conditions: Age-Related Macular Degeneration
Study on Efficacy and Safety of Givinostat Versus Hydroxyurea in Patients With Polycythemia Vera
Recruiting
The goal of this clinical trial is to compare the efficacy and safety of givinostat to hydroxyurea in Jak2V617F-positive high risk polycythemia vera patients.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: Emad Ibrahim, MD, Inc, Redlands, California
Conditions: Polycythemia Vera
Shifting Sleep Timing in Teens
Recruiting
The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents. The main questions this trial aims to answer are whether this combination therapy is able to meaningfully increase total sleep time in adolescents, and do so over a sustained period of time, and whether such a changes is associated with concomitant changes in mood and cognitive performance.
Gender:
ALL
Ages:
Between 14 years and 18 years
Trial Updated:
06/17/2025
Locations: Stanford University, Stanford, California
Conditions: Sleep Insufficiency, Sleep, Adolescent Behavior
Testing the Safety and Effectiveness of Radiation-based Treatment (Lutetium Lu 177 Dotatate) for Metastatic Prostate Cancer That Has Neuroendocrine Cells
Recruiting
This phase II trial studies how well lutetium Lu 177 dotatate works in treating patients with prostate cancer with neuroendocrine differentiation that has spread to other places in the body (metastatic). Neuroendocrine differentiation refers to cells that have traits of both hormone-producing endocrine cells and nerve cells. These cells release hormones into the blood in response to a signal from the nervous system. Hormones are biological substances that circulate through the bloodstream to con... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: City of Hope Comprehensive Cancer Center, Duarte, California
Conditions: Metastatic Prostate Adenocarcinoma With Neuroendocrine Differentiation, Metastatic Prostate Small Cell Neuroendocrine Carcinoma, Stage IV Prostate Cancer AJCC v8, Metastatic Prostate Neuroendocrine Carcinoma
@neurIST : Intregrated Biomedical Informatics for the Management of Cerebral Aneurysms
Recruiting
The primary aim of the SwissNeuroFoundation AneurysmDataBase Project is to implement information technology based tools to create and use a holistic reference database specific to intracranial aneurysms (IA).
The SwissNeuroFoundation AneurysmDataBase are concerned with generating the data with which to populate this database.
The purpose for populating the database are to:
* Screen for and evaluate markers of risk for intracranial aneurysm formation and aneurysm rupture. Are considered as mar... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: University of California, San Francisco, California
Conditions: Intracranial Aneurysm
The Canadian CABG or PCI in Patients With Ischemic Cardiomyopathy Trial (STICH3C)
Recruiting
The Canadian CABG or PCI in Patients With Ischemic Cardiomyopathy (STICH3C) trial is a prospective, unblinded, international multi-center randomized trial of 754 subjects enrolled in approximately 45 centers comparing revascularization by percutaneous coronary intervention (PCI) vs. coronary artery bypass grafting (CABG) in patients with multivessel/left main (LM) coronary artery disease (CAD) and reduced left ventricular ejection fraction (LVEF).
The primary objective is to determine whether C... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: Cedars-Sinai, Los Angeles, California
Conditions: Coronary Artery Disease, Heart Failure Systolic
Dulce Digital 2.0 - Innovative Diabetes Self-Management in the Digital Age
Recruiting
The proposed research, "Dulce Digital 2.0," will evaluate two mHealth adaptions of Project Dulce that are designed to improve digital health literacy, increase underserved individuals' capacity to access and engage with vital digital health information, and in turn, improve clinical and behavioral outcomes in at-risk adults with diabetes. Expanding access to care in populations faced with challenges of low socioeconomic status and health literacy is a step toward reducing health disparities and... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: Scripps Chula Vista Diabetes Center, Chula Vista, California
Conditions: Diabetes Type 2
2401 - 2412 of 5602
Kaiser Permanente houses over 6,000 physicians in southern California and it is also one of the largest research centers on the state. On its clinical trial division, Kaiser Permanente conducts clinical trials of almost every specialty funded by pharmaceutical companies, government, and foundations.
The Cedars-Sinai Medical Center located in Los Angeles is one of the largest research centers owned and operated by a private hospital in the United States. Focusing on biomedical, cancer, and heart research among other specialties, you can find almost any type of clinical trials for both health and non-healthy volunteers at the research division of Cedar-Sinai Medical Center.
There are around 100,000 clinical trials happening every year across the United States about almost every condition out there. While most clinical trials are testing drugs or medical devices there are also many behavioral and observational trials going on at any point in time. Many paid research studies are held at these California locations.
Clinical trials are incredibly important for making new medical and scientific discoveries, finding new and better methods for diagnosing medical conditions early, testing new interventions, and even developing safer and more effective surgical procedures.
In order for all these discoveries to me made available to the general population they need to go through years of rigorous testing both in healthy and non-healthy volunteers. During those years, medical professionals follow a protocol that has been previously approved by the FDA or other regulatory agency to test the effectiveness and safety of their discovery.
Other people choose to participate in a clinical trial because they feel it is a good way to contribute to the advancement of medical knowledge and that their participation can help many people in the future. The following lists of trials are broken down by condition, and to find a specific clinical trial in your area click through to clinicaltrials.gov.
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