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California Paid Clinical Trials
A listing of 5616 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1165 - 1176 of 5616
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California is currently home to 5616 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.
Featured Trial
Chronic Cough Research Study
Recruiting
Are you tired of living with chronic cough? Our research study is now looking to enroll people from all backgrounds to help research potential new treatment options for chronic cough.
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
Conditions:
Chronic Cough
Refractory or Unexplained Chronic Cough
Cough
Asthma
Sinusitis
Featured Offer
Lose Weight with GLP-1 Medications
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to semaglutide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
As a valued user, you’re eligible for $100 off your first program with code policy-lab-100.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
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
Featured Trial
Depressive disorder Clinical Study
Recruiting
A clinical study for people that suffer with Depressive disorder
Conditions:
Depressive disorder
An Adaptive Phase 2a/2b Study of LY3871801 in Adult Participants With Rheumatoid Arthritis
Recruiting
The main purpose of this study is to evaluate the efficacy and safety of LY3871801 in adult participants with active moderately-to-severe rheumatoid arthritis (RA).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: Newport Huntington Medical Group, Huntington Beach, California
Conditions: Rheumatoid Arthritis
A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of RLS-0071 in Newborns With Moderate or Severe Hypoxic-Ischemic Encephalopathy Undergoing Therapeutic Hypothermia
Recruiting
Hypoxic-ischemic encephalopathy (HIE) affects approximately 4,000 to 12,000 persons annually in the United States. Mortality from HIE has been reported up to 60%, with at least 25% of survivors left with significant neurocognitive disability. Despite this vital unmet medical need, no pharmacological adjunct or alternative therapy has proven beneficial in improving outcomes in neonatal HIE.
RLS-0071 is a novel peptide being developed for the treatment of neonatal HIE. This study is designed to e... Read More
Gender:
ALL
Ages:
10 hours and below
Trial Updated:
07/22/2025
Locations: Study Site 013, Orange, California
Conditions: Hypoxic-Ischemic Encephalopathy
Efficacy and Safety of Trimodulin (BT588) in Subjects With Severe Community-acquired Pneumonia (sCAP)
Recruiting
The main objective of the trial is to assess the efficacy and safety of trimodulin as adjunctive treatment to standard of care (SoC) compared to placebo plus SoC in adult hospitalized subjects with sCAP on invasive mechanical ventilation (IMV).
Other objectives are to determine detailed pharmacokinetic (PK) properties of trimodulin in a PK substudy and to determine its pharmacodynamic (PD) properties.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: University of California San Francisco-Fresno, Fresno, California
Conditions: Community-acquired Pneumonia
A Study of Imlunestrant Versus Standard Endocrine Therapy in Participants With Early Breast Cancer
Recruiting
The main purpose of this study is to measure how well imlunestrant works compared to standard hormone therapy in participants with early breast cancer that is estrogen receptor positive (ER+) and human epidermal receptor 2 negative (HER2-). Participants must have already taken endocrine therapy for two to five years and must have a higher-than-average risk for their cancer to return. Study participation could last up to 10 years.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: UCSF - John Muir Health Cancer Center Berkeley, Berkeley, California
Conditions: Breast Neoplasms
A Single-Ascending and Repeated Dose Study of LY3849891 in Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)
Recruiting
The main purpose of this study is to evaluate the safety and tolerability of the study drug LY3849891 in participants with metabolic dysfunction-associated steatotic liver disease (MASLD) who have the patatin-like phospholipase domain-containing protein 3 (PNPLA3) I148M genotype. Blood tests and magnetic resonance imaging of the liver will be performed to determine the effects of LY3849891 on MASLD and assessment of resolution of liver fibroinflammation. Blood tests will also determine how long... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Orange County Research Center, Orange, California
Conditions: Metabolic Dysfunction-Associated Steatohepatitis (MASH), Metabolic Dysfunction-associated Steatotic Liver Disease (MASLD)
Genetic Testing to Select Therapy for the Treatment of Advanced or Metastatic Kidney Cancer, OPTIC RCC Study
Recruiting
This phase II trial tests whether using genetic testing of tumor tissue to select the optimal treatment regimen works in treating patients with clear cell renal cell (kidney) cancer that has spread to other places in the body (advanced or metastatic). The current Food and Drug Administration (FDA)-approved regimens for advanced kidney cancer fall into two categories. One treatment combination includes two immunotherapy drugs (nivolumab plus ipilimumab), which are delivered by separate intravenou... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: City of Hope National Medical Center, Duarte, California
Conditions: Advanced Clear Cell Renal Cell Carcinoma, Metastatic Clear Cell Renal Cell Carcinoma, Stage III Renal Cell Cancer AJCC v8, Stage IV Renal Cell Cancer AJCC v8
A Study to Evaluate the Efficacy and Safety of Giredestrant in Combination With Phesgo (Pertuzumab, Trastuzumab, and Hyaluronidase-zzxf) Versus Phesgo in Participants With Locally Advanced or Metastatic Breast Cancer (heredERA Breast Cancer)
Recruiting
This Phase III, randomized, two-arm, open-label, multicenter study will evaluate the efficacy and safety of giredestrant plus Phesgo compared with Phesgo after induction therapy with Phesgo plus taxane in participants with human epidermal growth factor receptor 2 (HER2)-positive, estrogen receptor (ER)-positive advanced breast cancer (metastatic or locally advanced disease not amenable to curative treatment) who have not previously received a systemic non-hormonal anti-cancer therapy in the adva... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: Los Angeles Hematology Oncology Medical Group, Los Angeles, California
Conditions: Locally Advanced or Metastatic Breast Cancer
Specialty Compared to Oncology Delivered Palliative Care for Patients With Acute Myeloid Leukemia
Recruiting
This research study is evaluating whether primary palliative care is an alternative strategy to specialty palliative care for improving quality of life, symptoms, mood, coping, and end of life outcomes in patients with acute myeloid leukemia (AML).
Gender:
ALL
Ages:
Between 18 years and 120 years
Trial Updated:
07/22/2025
Locations: Stanford University, Stanford, California
Conditions: Relapsed Adult AML, Primary Refractory Acute Myeloid Leukemia, High Risk Acute Myeloid Leukemia
Distal Ischemic Stroke Treatment With Adjustable Low-profile Stentriever
Recruiting
The objective of the DISTALS Study is to evaluate the safety and effectiveness of the Tigertriever 13 Revascularization Device in restoring blood flow in the neurovasculature by removing thrombus in patients presenting within 24 hours of onset with an ischemic stroke with disabling neurological deficits due to a primary distal vessel occlusion (DVO), as compared to medical management.
Gender:
ALL
Ages:
Between 18 years and 85 years
Trial Updated:
07/22/2025
Locations: Providence Health, Fullerton, California
Conditions: Ischemic Stroke, Neovascularization
Intracranial Neurophysiological Signatures of Fear and Anxiety in Humans
Recruiting
Anxiety disorders such as post-traumatic stress disorder (PTSD) and generalized anxiety disorder (GAD) affect a large number of individuals with a significant portion of patients failing to improve with current treatments.
The purpose of this study is to understand the brain mechanisms that produce fear and anxiety in humans. To accomplish this goal, we will measure the brain activity along with the heart rate and skin perspiration of patients while they are completing tasks on a computer. Some... Read More
Gender:
ALL
Ages:
Between 12 years and 70 years
Trial Updated:
07/22/2025
Locations: University of California Los Angeles, Los Angeles, California
Proact: A Study of REACT in Subjects With Type 2 Diabetes Mellitus and Chronic Kidney Disease
Recruiting
The purpose of this study is to assess the safety and efficacy (including durability) of up to 2 REACT injections given 3 months (+30 days) apart and delivered percutaneously into biopsied and non-biopsied contralateral kidneys in participants with T2DM and CKD.
Gender:
ALL
Ages:
Between 30 years and 80 years
Trial Updated:
07/22/2025
Locations: Amicis Research Center, Beverly Hills, California
Conditions: Type 2 Diabetes Mellitus, Chronic Kidney Diseases
A Study Investigating Oral Ozanimod (RPC1063) in Pediatric Participants With Moderate to Severe Active Ulcerative Colitis
Recruiting
The purpose of this study is to evaluate the effectiveness and safety of ozanimod (RPC1063) in achieving and maintaining clinical remission. Ozanimod will be administered orally to pediatric participants with moderate to severe active ulcerative colitis (UC) who have had an inadequate response to conventional therapy.
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
07/22/2025
Locations: Local Institution - 0052, Garden Grove, California
Conditions: Colitis, Ulcerative
1165 - 1176 of 5616
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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