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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.
2497 - 2508 of 5602
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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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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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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Featured Trial
Birth Control Clinical Research Study
Recruiting
Living with obesity and looking for a birth control option that is right for you? Clinical trials are now enrolling women with a body mass index (BMI) of 30 or more in the area to help study a potential new progestin-only contraceptive patch. Participating in research studies can help advance birth control options. Don’t let financial stress hold you back. All study-related assessments, care, and study patch are available at no cost. You may also be reimbursed for study-related travel.
Conditions:
Obesity
Overweight
Overweight and 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
Intralesional Cyclosporine for Alopecia Areata
Recruiting
Alopecia areata (AA) is a chronic autoimmune disease that causes non-scarring, focal areas of hair loss. Due to its resulting disfigurement and unpredictable course, it is recognized as a serious medical condition with severe emotional and psychosocial distress, including a high prevalence of depression and anxiety.1-4 Treatment options for alopecia areata are limited.
Cyclosporine has been used as an effective therapeutic option in the treatment of psoriasis. Additionally, the use of oral cycl... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/11/2025
Locations: University of California, Davis - Dermatology Department, Sacramento, California
Conditions: Alopecia Areata
A Study of Mosliciguat in PH-ILD
Recruiting
This is a Phase 2, randomized, double-blind, placebo-controlled, multi-center clinical study to evaluate the safety and efficacy of inhaled mosliciguat in participants with pulmonary hypertension associated with interstitial lung disease (PH-ILD).
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
06/11/2025
Locations: Ronald Reagan UCLA Medical Center, Los Angeles, California
Conditions: Pulmonary Hypertension, Interstitial Lung Disease, Lung Diseases, Vascular Diseases, Cardiovascular Diseases, Fibrosis
CGM for Management of Type 2 Diabetes in Pregnancy
Recruiting
The goal of this clinical trial is to learn if continuous glucose monitoring works better than self-monitoring of blood glucose (fingersticks) to treat type 2 diabetes in pregnancy. It will also learn about all risk factors (biologic, personal, social) for maternal and infant complications in type 2 diabetes pregnancies. The main questions it aims to answer are:
1. Does continuous glucose monitoring improve infant outcomes compared to self-monitoring of blood glucose?
2. Does continuous glucose... Read More
Gender:
FEMALE
Ages:
Between 18 years and 50 years
Trial Updated:
06/11/2025
Locations: University of California at San Diego, San Diego, California
Conditions: Type 2 Diabetes Mellitus (T2DM), Pregnancy
An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Active Thyroid Eye Disease (TED)
Recruiting
This is a clinical trial assessing the efficacy, safety, and tolerability of an investigational drug, VRDN-003, in participants with active Thyroid Eye Disease (TED).
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
06/11/2025
Locations: Alliance Research Institute - Canoga Park, Canoga Park, California
Conditions: Thyroid Eye Disease
A Study of Andecaliximab in Participants With Fibrodysplasia Ossificans Progressiva (FOP)
Recruiting
This study is researching an experimental drug called andecaliximab. The study will include pediatric and adult patients with fibrodysplasia ossificans progressiva (FOP). The study will evaluate how safe and effective andecaliximab is in patients with FOP.
The study is looking at several research questions, including:
* Safety of andecaliximab in participants with FOP
* Whether andecaliximab reduces the number of new heterotopic bone lesions (Heterotopic Ossification; HO)
* Whether andecalixim... Read More
Gender:
ALL
Ages:
2 years and above
Trial Updated:
06/11/2025
Locations: University of California San Francisco (UCSF), San Francisco, California
Conditions: Fibrodysplasia Ossificans Progressiva
A Study of Toripalimab in Combination With Cisplatin and Gemcitabine in Participants With Recurrent Metastatic Nasopharyngeal Cancer
Recruiting
This study aims to investigate toripalimab with chemotherapy in participants with nasopharyngeal cancer.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/11/2025
Locations: University of California, Irvine, Irvine, California
Conditions: Nasopharyngeal Cancer Recurrent
EXActDNA-003 / NSABP B-64: Study of Molecular Residual Disease Detection in Breast Cancer (MRD)
Recruiting
The EXActDNA-003 study will prospectively enroll participants who are planning to undergo chemotherapy for high-risk, early breast cancer, who are willing to provide tissue and blood specimens for circulating tumor DNA (ctDNA) analysis.
Participants will be followed for up to 5.5 years.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: Stanford Cancer Institute, Palo Alto, California
Conditions: Breast Cancer
Single Time Point Prediction as Earlier Diagnosis of Progressive Pulmonary Fibrosis
Recruiting
This study is a prospective observational study for subjects with idiopathic pulmonary fibrosis (IPF) or non-IPF interstitial lung diseases (ILD).
The purpose of this study is to compare whether imaging patterns from high-resolution computed tomography (HRCT) at baseline can predict worsening. Single Time point Prediction (STP) is a score derived from an artificial intelligenc/ machine learning (AI/ML) using the radiomic features from a HRCT scan that quantifies the imaging patterns of short-te... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: UCLA, Los Angeles, California
Conditions: Pulmonary Fibrosis
Safety and Efficacy Study of PRV111 and PRV211 in Subjects With Oral Squamous Cell Carcinoma
Recruiting
Arm 1 ( Phase 2/3 Run in ):
PRV111: Topical Locoregional Delivery Placed Over the Tumor Region Primary Endpoint: Overall Response Rate (ORR) Primary Objective: Demonstrate the safety and efficacy of PRV111 in patients with Carcinoma in Situ (CIS) (WHO 2017)
Arm 2 (Phase 1) PRV211: Intraoperative Locoregional Delivery Placed into the Resected Tumor Bed Primary Endpoint: Safety Primary Objective: Determine Safety of PRV211 in intraoperative setting
Subject Assignment: Subjects will be assigned... Read More
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
06/11/2025
Locations: City of Hope National Medical Center, Duarte, California
Conditions: Oral Squamous Cell Carcinoma
Responding With Evidence and Access for Childhood Headaches
Recruiting
This comparative effectiveness study will clarify current first-line preventive treatment approaches for use by neurologists, psychologists, and primary care providers in the context of real world care, and will demonstrate the feasibility of Cognitive Behavioral Therapy (CBT) via telehealth for youth with migraine. The focus is on applying evidence-based care and enhancing access to it. CBT via telehealth while taking a clinically-prescribed, pill-based prevention therapy (amitriptyline) will b... Read More
Gender:
ALL
Ages:
Between 10 years and 17 years
Trial Updated:
06/11/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Headache, Headache Disorders, Headache, Migraine, Migraine, Migraine Disorders, Migraine With Aura, Migraine Without Aura, Chronic Migraine
Phase 1 Study Evaluating BA3182 in Patients With Advanced Adenocarcinoma.
Recruiting
The objective of this study is to assess safety and efficacy of BA3182 in Advanced Adenocarcinoma
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: UC Irvine, Irvine, California
Conditions: Advanced Adenocarcinoma
Efficacy, Safety, and Pharmacokinetics of Vericiguat in Pediatric Participants With Heart Failure Due to Left Ventricular Systolic Dysfunction (MK-1242-036)
Recruiting
This study aims to compare the efficacy of vericiguat versus placebo on change in n-terminal pro-brain natriuretic peptide (NTproBNP) from baseline to Week 16 of the Base Period. The primary hypothesis is that vericiguat is superior to placebo in reducing NT-proBNP at Week 16 of the Base Period.
Gender:
ALL
Ages:
Between 29 days and 17 years
Trial Updated:
06/11/2025
Locations: Loma Linda University Health System ( Site 0008), Loma Linda, California
Conditions: Heart Failure, Left Ventricular Systolic Dysfunction
2497 - 2508 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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