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California Paid Clinical Trials
A listing of 5600 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1 - 12 of 5600
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California is currently home to 5600 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
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
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Recruiting
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As a valued user, you’re eligible for $100 off your first program with code policy-lab-100.
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
A Study to Learn About the Effects of Felzartamab Infusions on Adults With Immunoglobulin A Nephropathy (IgAN)
Recruiting
In this study, researchers will learn more about the use of felzartamab in participants with immunoglobulin A nephropathy (IgAN). This study will focus on participants who have protein in their urine (proteinuria) as a result of damaged kidneys.
The main goal of the study is to learn about the effect felzartamab has on proteinuria. The main question that researchers want to answer is:
• How much does the amount of protein in the urine change from the start of the study to Week 36?
Researchers... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: FOMAT Medical Research - FOMAT - PPDS, Oxnard, California
Conditions: Immunoglobulin A Nephropathy (IgAN)
Study for AZD4360 in Participants With Advanced Solid Tumours
Recruiting
The purpose of this study is to evaluate the safety, tolerability, PK, immunogenicity, pharmacodynamics, and preliminary efficacy of AZD4360 in adult participants with locally advanced or metastatic solid tumours selected for expression of CLDN18.2.
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/01/2025
Locations: Research Site, Santa Monica, California
Conditions: Gastric Cancer, Gastroesophageal Junction Cancer, Biliary Tract Cancer, Pancreatic Ductal Adenocarcinoma
Phase III Study of Rilvegostomig in Combination With Bevacizumab With or Without Tremelimumab as First-line Treatment of Hepatocellular Carcinoma
Recruiting
This is a Phase III, randomised, open-label, sponsor-blinded, 3-arm, multicentre, global study assessing the efficacy and safety of rilvegostomig in combination with bevacizumab with or without tremelimumab compared to atezolizumab in combination with bevacizumab. This study will be conducted in participants with advanced HCC who are not amenable to curative therapy or locoregional therapy
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: Research Site, Palo Alto, California
Conditions: Hepatocellular Carcinoma
A Study of LY3457263 Compared With Placebo in Participants With Type 2 Diabetes on a Stable Dose of Semaglutide or Tirzepatide
Recruiting
The purpose of this study is to measure the change in hemoglobin A1c (HbA1c) with LY3457263 compared with placebo in participants with type 2 diabetes who are not at HbA1c goal when treated with a stable dose of semaglutide or tirzepatide. Participation in the study will last about 9 months.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
07/01/2025
Locations: Wolverine Clinical Trials, Santa Ana, California
Conditions: Type 2 Diabetes
Description of Patients With Type 1 Diabetes Treated With Teplizumab
Recruiting
Type 1 diabetes mellitus (T1D) is a chronic autoimmune disease caused by the destruction of pancreatic β cells. T1D pathogenesis progresses through several stages: Stage 1 T1D includes the presence of β cell autoimmunity and thus presence of islet autoantibodies, without the presence of dysglycemia and symptoms. Stage 2 T1D includes the presence of islet autoantibodies and dysglycemia, also with no symptoms. Stage 3 T1D includes presence of islet autoantibodies, overt hyperglycemia, and symptoms... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/01/2025
Locations: University of California, San Francisco, San Francisco, California
Conditions: Type 1 Diabetes
A Study of Adagrasib Plus Pembrolizumab Plus Chemotherapy vs. Placebo Plus Pembrolizumab Plus Chemotherapy in Participants With Previously Untreated Non-squamous Non-small Cell Lung Cancer With KRAS G12C Mutation (KRYSTAL-4)
Recruiting
This is a trial to evaluate the efficacy, safety, and tolerability of adagrasib plus pembrolizumab plus platinum-doublet chemotherapy versus placebo plus pembrolizumab plus platinum-doublet chemotherapy in participants with previously untreated, locally advanced or metastatic NSCLC with KRAS G12C mutation
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: Local Institution - 0581, Fullerton, California
Conditions: Carcinoma, Non-Small-Cell Lung
A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose
Recruiting
This study aims to check how safe and well-tolerated a second dose of RSVpreF is when given during later pregnancies, and to see how long the immunity lasts from a single dose given during a previous pregnancy by examining the blood of nonpregnant participants who had the vaccine before.
Gender:
ALL
Ages:
0 years and above
Trial Updated:
07/01/2025
Locations: Lucile Packard Children's Hospital-Labor and Delivery Unit, Palo Alto, California
Conditions: RSV Infection
A Study of Novel Study Interventions and Combinations in Participants With Colorectal Cancer
Recruiting
The main purpose of this study is to evaluate the safety and efficacy of novel study interventions and combinations in participants with Colorectal Cancer (CRC).
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/01/2025
Locations: Research Site, Los Angeles, California
Conditions: Metastatic Colorectal Cancer
A Study of Breast Cancer Risk Factors and Outcomes of People in Florida
Recruiting
The purpose of this study is to understand why different people have different risks and outcomes for breast cancer and non-breast cancer.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: University of California, Los Angeles (Specimen Analysis only), Los Angeles, California
Testing the Addition of the Immunotherapy Drug, Pembrolizumab, to Radiation Therapy Compared to the Usual Chemotherapy Treatment During Radiation Therapy for Bladder Cancer, PARRC Trial
Recruiting
This phase II trial compares the use of pembrolizumab and radiation therapy to chemotherapy with cisplatin, gemcitabine, 5-fluorouracil or mitomycin-C and radiation therapy for the treatment of non-muscle invasive bladder cancer. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs, such as cisplatin, gemcitabine, 5-fluorouracil or mitomycin-C,... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: AIS Cancer Center at San Joaquin Community Hospital, Bakersfield, California
Conditions: Non-Muscle Invasive Bladder Urothelial Carcinoma, Recurrent Non-Muscle Invasive Bladder Urothelial Carcinoma, Stage I Bladder Cancer AJCC v8
Avexitide for Treatment of Post-Bariatric Hypoglycemia
Recruiting
AVX-001 (LUCIDITY) is a Phase 3 study to evaluate avexitide compared to placebo in participants with post bariatric hypoglycemia (PBH) related to Roux-en-Y gastric bypass (RYGB). The study will assess avexitide compared to placebo for safety and efficacy, measured by reduction of hypoglycemic events. The study includes a Screening period with a Run-in period (of up to 6- and 3-weeks, respectively); a randomized, double-blind, placebo-controlled study treatment period of 16 weeks; and a two-part... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/01/2025
Locations: Stanford Health Care - Endocrinology Clinic, Stanford, California
Conditions: Post Bariatric Hypoglycemia
A Phase III Renal Outcomes and Cardiovascular Mortality Study to Investigate the Efficacy and Safety of Baxdrostat in Combination With Dapagliflozin in Participants With Chronic Kidney Disease and High Blood Pressure
Recruiting
International, Multicenter, Double-Blind, Placebo-Controlled and Event-driven study to assess efficacy, safety and Tolerability of Baxdrostat in combination with Dapagliflozin on renal outcomes and cardiovascular mortality in participants with chronic kidney disease and high blood pressure
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/01/2025
Locations: Research Site, Beverly Hills, California
Conditions: Chronic Kidney Disease and Hypertension
1 - 12 of 5600
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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