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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.
2413 - 2424 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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Lose 20% of Body Weight With GLP-1's
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to tirzepatide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
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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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).
Get $50 off your first order using promo 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
Featured Trial
Stroke Clinical Study
Recruiting
A clinical study for people that suffer with Stroke
Conditions:
Stroke
An Extension Study to Assess Long-Term Safety and Tolerability of Adjunctive KarXT in Subjects With Inadequately Controlled Symptoms of Schizophrenia
Recruiting
This is a Phase 3, multicenter, 52-week, outpatient, open-label extension (OLE) study to evaluate the long-term safety and tolerability of adjunctive KarXT in subjects with schizophrenia with an inadequate response to their current antipsychotic treatment who previously completed the treatment period (Visit 8/Day 42 ± 3) of ARISE Study (KAR-012). The primary objective of the study is to assess the long-term safety and tolerability of adjunctive KarXT (a fixed dose combination of xanomeline and t... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/17/2025
Locations: Advanced Research Center, Inc., Anaheim, California
Conditions: Schizophrenia
ALTUS: Performance of a Multi- Target Hepatocellular Carcinoma (HCC) Test in Subjects With Increased Risk
Recruiting
The primary objective is to assess overall sensitivity and specificity of Oncoguard™ Liver for hepatocellular cancer (HCC) detection in a surveillance population.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: Franco Felizarta, MD, Bakersfield, California
P-BCMA-ALLO1 Allogeneic CAR-T Cells in the Treatment of Subjects With Multiple Myeloma
Recruiting
Phase 1 study comprised of open-label, dose escalation, multiple cohorts of P-BCMA-ALLO1 allogeneic T stem cell memory (Tscm) CAR-T cells in subjects with relapsed / refractory Multiple Myeloma (RRMM).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: University of California San Diego, San Diego, California
Conditions: Multiple Myeloma
Extremely Hypofractionated Intensity Modulated Stereotactic Body Radiotherapy for the Treatment of Prostate Cancer With Rising PSA After Radical Prostatectomy
Recruiting
This phase II trial investigates the effect of extremely hypofractionated intensity modulated stereotactic body radiotherapy in treating patients with prostate cancer that has rising prostate specific antigen (PSA) after radical prostatectomy. Stereotactic body radiation therapy uses special equipment to position a patient and deliver radiation to tumors with high precision. This method may kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue. Hypofracti... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
06/17/2025
Locations: UCLA / Jonsson Comprehensive Cancer Center, Los Angeles, California
Conditions: Prostate Adenocarcinoma, Stage IIIB Prostate Cancer American Joint Committee on Cancer (AJCC) v8, Stage IIIC Prostate Cancer AJCC v8, Stage IV Prostate Cancer AJCC v8, Stage IVA Prostate Cancer AJCC v8, Stage IVB Prostate Cancer AJCC v8
Cobimetinib in Refractory Langerhans Cell Histiocytosis (LCH), and Other Histiocytic Disorders
Recruiting
This is a research study of a drug called cobimetinib in children and adults diagnosed with Langerhans cell histiocytosis (LCH), and other histiocytic disorders that has returned or does not respond to treatment. Cobimetinib blocks activation of a protein called Mitogen-activated protein kinase (MEK) that is part of incorrect growth signals in histiocytosis cells. Four different groups of patients will be enrolled.
Gender:
ALL
Ages:
All
Trial Updated:
06/17/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Langerhan's Cell Histiocytosis, Juvenile Xanthogranuloma, Erdheim-Chester Disease, Rosai Dorfman Disease, Neuro-Degenerative Disease, Histiocytic Sarcoma, Histiocytic Disorders, Malignant
Study to Evaluate the Pharmacokinetics and Safety of Pralatrexate in Patients With Advanced Solid Tumor or Hematological Malignancy and Either Normal Hepatic Function or Mild, Moderate, or Severe Hepatic Impairment
Recruiting
This purpose of this study is to help to evaluate the pharmacokinetic (PK) profile of pralatrexate when administered to patients with various degrees of hepatic impairment and to evaluate the safety and establish the dosing recommendations for pralatrexate administered once weekly for 6 weeks of every 7-week treatment cycle in patients with hepatic impairment. Pharmacokinetics (or PK) is the study of how your body absorbs, breaks down, and removes a study drug.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/16/2025
Locations: TOI Clinical Research, Cerritos, California
Conditions: Advanced Solid Tumors, Hematologic Malignancies
IMVT-1402 in Adult Participants With Chronic Inflammatory Demyelinating Polyneuropathy (CIDP)
Recruiting
This is a Phase 2b study to evaluate the efficacy and safety of IMVT-1402 in adults with CIDP.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/16/2025
Locations: Site Number - 1618, Carlsbad, California
Conditions: Chronic Inflammatory Demyelinating Polyneuropathy
A Phase II, Placebo Controlled, Clinical Trial of Topical TolaSure Targeting Aggregated Mutant Keratin in Epidermolysis Bullosa Simplex
Recruiting
This Phase II clinical study will assess the efficacy, safety and tolerability of topical TolaSure Gel in adults and pediatric patients (4 years of age and older) diagnosed with generalized intermediate to severe epidermolysis bullosa simplex (EBS). Each patient (40 to complete) will be enrolled in the study and will be randomized to receive either TolaSure Gel or a topical Placebo for daily application for 2-months. After 2-months, all patients will receive TolaSure Gel to daily apply for an ad... Read More
Gender:
ALL
Ages:
4 years and above
Trial Updated:
06/16/2025
Locations: Stanford University School of Medicine, Dermatology Department, Palo Alto, California
Conditions: Epidermolysis Bullosa Simplex
A Study of LY4268989 (MORF-057) in Healthy Participants
Recruiting
The purpose of this study is to measure the body's absorption and processing of the study drug, the study drug's effect on the body, safety, and tolerability with LY4268989 (MORF-57) in healthy participants, including Japanese and Chinese participants
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/16/2025
Locations: CenExel ACT, Anaheim, California
Conditions: Healthy
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine and a Marketed Measles, Mumps and Rubella Vaccine When Administered as Intramuscular Injection to Healthy Children 12 to 15 Months of Age
Recruiting
This study aims to assess the immune response and safety of GSK's candidate chickenpox and marketed MMR vaccines when given to children 12 to 15 months of age via a muscle injection. It compares the GSK vaccines to Merck's chickenpox vaccine, administered just under the skin. Additionally, the study will evaluate the immune response and safety of giving the GSK vaccines along with other childhood vaccines through a muscle injection.
Gender:
ALL
Ages:
Between 12 months and 15 months
Trial Updated:
06/16/2025
Locations: GSK Investigational Site, Huntington Park, California
Conditions: Chickenpox
Safety and Efficacy Study of Sivopixant, Acetazolamide and SASS-001 in Sleep Apnea
Recruiting
The primary purpose of this study is to evaluate the effectiveness of sivopixant, acetazolamide and SASS-001 in adults with sleep apnea with a central component.
Gender:
ALL
Ages:
Between 18 years and 85 years
Trial Updated:
06/16/2025
Locations: Altman Clinical and Translational Research Institute (ACTRI), La Jolla, California
Conditions: Sleep Apnea
A Dose Range-Finding Study to Assess the Efficacy and Safety of Multiple Dose Levels of AZD8630 in Adults With Uncontrolled Asthma at Risk of Exacerbations
Recruiting
A dose range-finding study to assess the efficacy and safety of multiple dose levels of AZD8630 administered via a dry powder inhaler in adults with uncontrolled asthma at risk of exacerbations, receiving medium -to -high dose inhaled corticosteroid (ICS)/long-acting β2-agonist (LABA).
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
06/16/2025
Locations: Research Site, Huntington Beach, California
Conditions: Asthma
2413 - 2424 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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