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California Paid Clinical Trials
A listing of 5617 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1 - 12 of 5617
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California is currently home to 5617 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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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
A Phase III Study of AZD0780 on Major Adverse CV Events in Patients With a History of ASCVD Events or at High Risk for a First Event
Recruiting
The purpose of this phase 3, randomized, placebo controlled, event-driven study is to assess the effect of AZD0780, an oral PCSK9 inhibitor, compared with placebo in reducing the risk of MACE-PLUS in patients with established ASCVD or at high risk for a first ASCVD event. The effect of AZD0780 vs placebo on the risk of MACE-PLUS will be evaluated from randomisation until the primary analysis censoring date (PACD). The Study Closure Visit will be scheduled to occur after the PACD and will be the... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: Research Site, Beverly Hills, California
Conditions: Cardiovascular Disease
Study to Investigate the Effect of Hepatic Impairment on the Pharmacokinetics, Safety, and Tolerability of AZD5004
Recruiting
This is a Phase I, multicentre, single-dose, non-randomised, open-label, parallel-group study to examine the PK, safety, and tolerability of AZD5004 in male and female participants with mild, moderate, and severe hepatic impairment compared with participants with normal hepatic function.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/31/2025
Locations: Research Site, Lake Forest, California
Conditions: Hepatic Impairment
A Study of VRC07-523LS, PGT121.414.LS, and PGDM1400LS Broadly Neutralizing Monoclonal Antibodies Given Intravenously in Adult Participants Without HIV
Recruiting
HVTN 206/HPTN 114 is a randomized, double blind, controlled, phase 2 clinical trial to evaluate the safety, tolerability, pharmacokinetics, and neutralization of VRC07-523LS, PGT121.414.LS, and PGDM1400LS broadly neutralizing monoclonal antibodies given intravenously in adult participants without HIV.
The hypothesis of the study is that the combination of VRC07-523LS and PGT121.414.LS and PGDM1400LS antibodies when administered via the intravenous (IV) route will be safe and tolerable in adult... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/31/2025
Locations: Bridge HIV, San Francisco Department of Public Health, San Francisco, California
Conditions: HIV
Optimization of Beta-lactam Dosing in Critically Ill Patients With Cystatin C (OPTIMIZE-GNI)
Recruiting
The purpose of this study is to evaluate the abilities of Cystatin C (CysC) and CysC-based estimated Glomerular Filtration Rate (eGFR) equations to characterize the pharmacokinetics (PK) profiles of meropenem and cefepime relative to Serum Creatinine (SCR), Serum Creatinine based Equation (SCRE)and iohexol at the population and individual levels in critically ill adult patients with suspected or documented AMR Gram-negative infections. We hypothesize that CysC and CysC-based eGFR equations will... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: Harbor UCLA Medical Center - Medicine - Infectious Diseases, Torrance, California
Conditions: Bacterial Infection
A Trial of Felzartamab in Kidney Transplant Recipients With Late Antibody-Mediated Rejection (AMR)
Recruiting
The main goal of this trial is to evaluate the efficacy of felzartamab compared to placebo in kidney transplant recipients diagnosed with late active or chronic active AMR.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
07/31/2025
Locations: Loma Linda, Loma Linda, California
Conditions: Antibody-mediated Rejection
A Study to Evaluate IPN10200 Safety and Efficacy in the Prevention of Episodic or Chronic Migraine in Adults
Recruiting
A migraine is a headache with severe throbbing pain or a pulsating sensation, usually on one side of the head. It is often accompanied by feeling or being sick and a sensitivity to bright lights and sound. Migraines are caused by a series of events when the brain gets stimulated or activated, which causes the release of chemicals that cause pain. IPN10200 is a medication that stops the release of these chemical messengers.
Participants with episodic migraine (EM) or chronic migraine (CM) will b... Read More
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/31/2025
Locations: Profound Research. LLC - NCSC, Carlsbad, California
Conditions: Episodic Migraine, Chronic Migraine
A Pilot rTMS Trial for Neuropsychiatric Symptoms of Long-COVID
Recruiting
This is a pilot randomized trial of rTMS for symptoms of fatigue and brain fog, and other neuropsychiatric symptoms of Long-COVID (Post-COVID, post-acute sequelae of COVID-19 infection, PASC). Twenty participants diagnosed with Long-COVID and recruited from the UCLA Long-COVID clinic will be randomized to receive active rTMS versus sham stimulation for 15 treatments followed by another 15 open-label rTMS treatments. Investigators will compare the safety and tolerability of rTMS vs Sham and exami... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: UCLA Semel Institute, Los Angeles, California
Conditions: Long Covid-19, PASC Post Acute Sequelae of COVID 19, Brain Fog, Fatigue
A Study to Evaluate KarXT as a Treatment for Psychosis Associated With Alzheimer's Disease (ADEPT-4)
Recruiting
The purpose of this study is to evaluate the safety and efficacy of KarXT in adult participants with mild to severe Alzheimer's Disease (AD) with moderate to severe psychosis related to AD.
Gender:
ALL
Ages:
Between 55 years and 90 years
Trial Updated:
07/31/2025
Locations: Advanced Research Center, Inc., Anaheim, California
Conditions: Alzheimer Disease
A Clinical Study of Efinopegdutide in People With Compensated Cirrhosis Due to Steatohepatitis (MK-6024-017)
Recruiting
Researchers are looking for ways to treat a type of liver disease caused by elevated liver fat, called metabolic dysfunction-associated steatohepatitis (MASH). MASH was formerly called non-alcoholic steatohepatitis (NASH). Researchers want to learn if a study medicine called efinopegdutide can treat MASH.The goals of this study are to learn:
* If efinopegdutide can lower the amount of fat, inflammation, and scarring (fibrosis) in the liver
* About the safety of efinopegdutide and how well peopl... Read More
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/31/2025
Locations: California Liver Research Institute ( Site 0113), Pasadena, California
Conditions: Non-alcoholic Fatty Liver Disease, Nonalcoholic Steatohepatitis, NAFLD, Metabolic Dysfunction-associated Steatotic Liver Disease, Metabolic Dysfunction-associated Steatohepatitis
Safety and Preliminary Effectiveness of BNT327, an Investigational Therapy for Breast Cancer, When Given in Combination With Chemotherapy
Recruiting
This study is a Phase II, multi-site, randomized, open-label clinical study to evaluate the safety, efficacy, and pharmacokinetics (PK) of BNT327 at two dose levels in combination with chemotherapeutic agents in the first- and second-line treatment of participants with locally advanced/metastatic triple-negative breast cancer (mTNBC).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: Beverly Hills Cancer Center, Beverly Hills, California
Conditions: Locally Advanced Breast Cancer, Triple Negative Breast Cancer, Metastatic Triple Negative Breast Cancers
A Study Observing Everyday Effectiveness and Safety of the Drug Elafibranor in Participants With Primary Biliary Cholangitis Who Are Receiving Ongoing Treatment
Recruiting
This study will collect information from participants with Primary Biliary Cholangitis (PBC) as they use the drug elafibranor in real world setting.
PBC is a progressive rare liver disease in which tubes in the liver called bile ducts are damaged.
The liver damage in PBC may lead to scarring (cirrhosis). PBC may also be associated with multiple symptoms. Many participants with PBC may require liver transplant or may die if the disease progresses and a liver transplant is not done.
In this stu... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/31/2025
Locations: Southern California Research Center, Coronado, California
Conditions: Primary Biliary Cholangitis
A Study to Determine if BHV-7000 is Effective and Safe in Adults With Idiopathic Generalized Epilepsy With Generalized Tonic-clonic Seizures
Recruiting
The purpose of this study is to determine whether BHV-7000 is effective in the treatment of idiopathic generalized epilepsy with generalized tonic-clonic seizures and includes an additional open-label extension (OLE) phase.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
07/31/2025
Locations: Amicis Research Center, Lancaster, California
Conditions: Generalized Epilepsy
1 - 12 of 5617
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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