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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.
505 - 516 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
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Conditions:
Healthy
Healthy Volunteer Study
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 Weight with GLP-1 Medications
Recruiting
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GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
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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 $50 off your first program with 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
Testing Cabozantinib With or Without Atezolizumab in Patients With Advanced Papillary Kidney Cancer, PAPMET2 Trial
Recruiting
This phase II trial compares the effect of atezolizumab in combination with usual treatment with cabozantinib to cabozantinib alone in patients with papillary renal cell carcinoma that has spread from where it first started (primary site) to other places in the body (metastatic). Papillary renal cell carcinoma (PRCC) is a type of kidney cancer that forms in the lining of the tiny tubes in the kidney that return filtered substances that the body needs back to the blood and remove extra fluid and... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Kaiser Permanente-Anaheim, Anaheim, California
Conditions: Metastatic Papillary Renal Cell Carcinoma, Stage IV Renal Cell Cancer AJCC v8
Study of Erdafitinib Intravesical Delivery System for Localized Bladder Cancer
Recruiting
The purpose of the study in Part 1 (dose escalation) and in Part 2 (dose expansion) is to determine the recommended Phase 2 dose(s) (RP2D\[s\]) and evaluate preliminary clinical efficacy. Part 3 (dose expansion) will confirm safety and preliminary clinical activity at the RP2D. Part 4 (RP2D expansion) will assess the overall complete response (CR) in participants with intermediate-risk-non-muscle invasive bladder cancer (IR-NMIBC; means the cancer cells are only in the bladder's inner lining).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Urinary Bladder Neoplasms, Receptors, Fibroblast Growth Factor
A Study of Nipocalimab in Children Aged 2 to Less Than 18 Years With Generalized Myasthenia Gravis
Recruiting
The purpose of this study is to determine the effect of nipocalimab on total serum immunoglobulin G (IgG) in pediatric participants 2 to less than (\<) 18 years of age (globally) and 8 to \<18 years of age (for Unites Stated (US) sites only), the safety and tolerability of treatment with nipocalimab in children and adolescents and to evaluate the pharmacokinetics (PK) of nipocalimab in children and adolescents with generalized myasthenia gravis (gMG) who have an insufficient clinical response to... Read More
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
08/14/2025
Locations: Childrens Hospital Los Angeles, Los Angeles, California
Conditions: Myasthenia Gravis
A Study of Tucatinib With Trastuzumab and mFOLFOX6 Versus Standard of Care Treatment in First-line HER2+ Metastatic Colorectal Cancer
Recruiting
This study is being done to find out if tucatinib with other cancer drugs works better than standard of care to treat participants with HER2 positive colorectal cancer. This study will also determine what side effects happen when participants take this combination of drugs. A side effect is anything a drug does to the body besides treating your disease.
Participants in this study have colorectal cancer that has spread through the body (metastatic) and/or cannot be removed with surgery (unresect... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Pacific Cancer Medical Center Inc., Anaheim, California
Conditions: Colorectal Neoplasms
A Study of PF-08046054/SGN-PDL1V in Advanced Solid Tumors
Recruiting
This study will test the safety of a drug called PF-08046054/SGN-PDL1V alone and with pembrolizumab in participants with solid tumors. It will also study the side effects of this drug. A side effect is anything a drug does to your body besides treating your disease.
Participants will have solid tumor cancer that has spread through the body (metastatic) or cannot be removed with surgery (unresectable).
This study will have five parts. Parts A and B of the study will find out how much PF-0804605... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: University of California Davis Comprehensive Cancer Center, Sacramento, California
Conditions: Carcinoma, Non-Small-Cell Lung, Squamous Cell Carcinoma of the Head and Neck, Esophageal Squamous Cell Carcinoma, Ovarian Neoplasms, Melanoma, Triple Negative Breast Neoplasms, Gastric Cancer
Efficacy and Safety of Remibrutinib Compared to Teriflunomide in Participants With Relapsing Multiple Sclerosis (RMS)
Recruiting
To compare the efficacy and safety of remibrutinib versus teriflunomide in patients with relapsing multiple sclerosis (RMS)
Gender:
ALL
Ages:
Between 18 years and 55 years
Trial Updated:
08/14/2025
Locations: Vladimir Royter MD APMC, Hanford, California
Conditions: Relapsing Multiple Sclerosis
A Multicenter Study of Continued Current Therapy vs Transition to Ofatumumab After Neurofilament (NfL) Elevation
Recruiting
This study will evaluate if relapsing-remitting MS patients that have not had a relapse in the past year would benefit from a switch to ofatumumab versus staying on their continued current therapy. This study will also look at whether an elevated serum neurofilament light (NfL) level predicts enhanced benefit from a switch to ofatumumab.
Gender:
ALL
Ages:
Between 18 years and 50 years
Trial Updated:
08/14/2025
Locations: University of California at Los Angeles, Torrance, California
Conditions: Relapsing-Remitting Multiple Sclerosis
A Study to Test the Efficacy and Safety of Staccato Alprazolam in Study Participants 12 Years of Age and Older With Stereotypical Prolonged Seizures
Recruiting
The purpose of the study is to assess the success of a single administration of Staccato alprazolam compared with placebo both in rapidly terminating a seizure episode within 90 seconds and with no recurrence of seizure(s) up to 2 hours after investigational medicinal product (IMP) administration.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
08/14/2025
Locations: Ep0162 50118, Downey, California
Conditions: Stereotypical Prolonged Seizures
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:
08/14/2025
Locations: Local Institution - 0052, Garden Grove, California
Conditions: Colitis, Ulcerative
Spine Procedures Assisted With RoboTics And Navigation
Recruiting
Creation of a pediatric robotic spine surgery registry will allow for data collection and analysis on the coupled use of robotics and navigation, as well as patient-specific rods in pediatric spine deformity surgery across participating study institutions. Eventually, an educational and informative framework for this technology will be established.
Gender:
ALL
Ages:
Between 0 years and 21 years
Trial Updated:
08/14/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Spine Deformity, Idiopathic Scoliosis, Adolescent Idiopathic Scoliosis, Spondylolisthesis, Congenital Scoliosis, Neuromuscular Scoliosis
A Study to Evaluate the Efficacy and Safety of Rozanolixizumab in Adult Participants With Myelin Oligodendrocyte Glycoprotein (MOG) Antibody-associated Disease (MOG-AD)
Recruiting
The purpose of the study is to evalute the efficacy, safety and tolerability of rozanolixizumab for treatment of adult participants with myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOG-AD).
Gender:
ALL
Ages:
Between 18 years and 89 years
Trial Updated:
08/14/2025
Locations: Mog001 50450, Palo Alto, California
Conditions: Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease (MOG-AD)
SELUTION4BTK Trial
Recruiting
This study aims to demonstrate superior efficacy and equivalent safety of the SELUTION SLR™ DEB 014 compared to plain (uncoated) balloon angioplasty in the treatment of peripheral arterial disease (PAD) in the BTK arteries in CLTI patients.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: St. Helena Hospital, Saint Helena, California
Conditions: Peripheral Arterial Disease, Chronic Limb-Threatening Ischemia Nos of Native Arteries of Extremities
505 - 516 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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