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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.
2245 - 2256 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
RGX-314 Gene Therapy Administered in the Suprachoroidal Space for Participants With Neovascular Age-Related Macular Degeneration (nAMD) (AAVIATE)
Recruiting
RGX-314 is being developed as a potential novel one-time gene therapy treatment for the treatment of neovascular (wet) age related macular degeneration (wet AMD). Wet AMD is characterized by loss of vision due to new, leaky blood vessel formation in the retina. Wet AMD is a significant cause of vision loss in the United States, Europe and Japan, with up to 2 million people living with wet AMD in these geographies alone. Current anti-VEGF therapies have significantly changed the landscape for tre... Read More
Gender:
ALL
Ages:
Between 50 years and 89 years
Trial Updated:
06/25/2025
Locations: Bakersfield Location, Bakersfield, California
Conditions: Neovascular Age-Related Macular Degeneration (nAMD)
Optune Delivered Electric Field Therapy and Bevacizumab in Treating Patients With Recurrent or Progressive Grade 2 or 3 Meningioma
Recruiting
The purpose of this research study is to determine the effects bevacizumab (the study drug) combined with Optune (the study device) tumor treatment field therapy has on meningiomas. Bevacizumab is considered investigational because the US Food and Drug Administration (FDA) has not approved its use for the treatment of meningiomas. The study drug is a medication that blocks the growth of new blood vessels. It is thought that the study drug may interfere with the growth of new blood vessels and th... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/25/2025
Locations: John Wayne Cancer Center at Providence St. John's Health Center, Santa Monica, California
Conditions: Anaplastic (Malignant) Meningioma, Atypical Meningioma, Grade II Meningioma, Grade III Meningioma, Recurrent Meningioma, Supratentorial Meningioma
A Master Protocol for Orforglipron (LY3502970) in Participants With Obesity or Overweight With and Without Type 2 Diabetes
Recruiting
The purpose of this Master Protocol is to support two studies to see how well and how safely orforglipron works compared to placebo in participants who have obesity or overweight with or without type 2 diabetes. Participants will be screened for about 4 weeks, after which they will enroll into either J2A-MC-GZP1, NCT06972459 (do not have type 2 diabetes) or J2A-MC-GZP2, NCT06972472 (have type 2 diabetes).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Norcal Endocrinology & Internal Medicine, San Ramon, California
Conditions: Obesity, Overweight, Type 2 Diabetes
Virtual Reality Interventions for the Improvement of Depression, Anxiety and Pain in Patients With Head and Neck Cancer and Caregivers
Recruiting
This clinical trial tests how well a three-dimensional (3D) mindfulness virtual reality (VR) versus (vs) two-dimensional (2D) non-immersive interventions works in improving depression, anxiety, pain, and/or stress in patients with head and neck cancer (HNC) undergoing radiation or chemoradiation (C/RT), and their caregivers. HNC patients undergoing C/RT can experience higher levels of depression, anxiety, distress and pain that negatively impact their quality of life. VR allows for a realistic e... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Head and Neck Carcinoma
A Study of ONO-2020 in Participants With Mild to Moderate Alzheimer's Disease
Recruiting
This is a Phase 2, double-blind, parallel-group, placebo-controlled study to assess safety, tolerability, pharmacokinetics, and efficacy of ONO-2020 in participants with mild to moderate Alzheimer's disease (AD). This study aims to determine whether administering ONO-2020, an epigenetic regulator, may improve cognitive functions like memory and cognition in individuals with Alzheimer's disease dementia.
Gender:
ALL
Ages:
Between 55 years and 85 years
Trial Updated:
06/24/2025
Locations: Profound Research LLC at The Neurology Center of Southern California, Carlsbad, California
Conditions: Alzheimer Disease
A Study of LY3541860 in Adult Participants With Moderately to Severely Active Rheumatoid Arthritis
Recruiting
The main purpose of this study is to evaluate the effects of LY3541860 in adult participants with moderately to severely active Rheumatoid Arthritis with inadequate response to a least one biologic disease-modifying antirheumatic drug (bDMARD)or targeted synthetic disease-modifying antirheumatic drug (tsDMARD).
Study participation is approximately 50 weeks, including a 6-week screening period, 24-week treatment period, and a 20-week safety follow up period.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
06/24/2025
Locations: Medvin Clinical Research - Covina, Covina, California
Conditions: Rheumatoid Arthritis
Efficacy and Safety of 186 mcg of OPN-375 Nasal Spray Twice a Day (BID) in Adolescents With Chronic Rhinosinusitis Without Nasal Polyps
Recruiting
This is a 12-Week randomized, double-blind, placebo-controlled, parallel-group, multicenter study evaluating the efficacy and safety of intranasal administration of 186 µg of OPN-375 twice a day (BID) in adolescent subjects with chronic rhinosinusitis without nasal polyps. The total planned number of subjects is approximately 84 adolescents (12-17 years of age) who will be randomly assigned to receive 1 of 2 study treatments using a 1:1 ratio (OPN-375 186 µg:placebo). The study includes a PK sub... Read More
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
06/24/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Chronic Rhinosinusitis Without Nasal Polyps
Intracranial Genetically Modified Immune Cells (TGFβR2KO/IL13Rα2 CAR T-Cells) for the Treatment of Recurrent or Progressive Glioblastoma or Grade 3 or 4 IDH-Mutant Astrocytoma
Recruiting
This phase I trial tests the safety, side effects and best dose of TGFβR2KO/IL13Rα2 chimeric antigen receptor (CAR) T-cells given within the skull (intracranial) in treating patients with glioblastoma or IDH-mutant grade 3 or 4 astrocytoma that has come back after a period of improvement (recurrent) or that is growing, spreading, or getting worse (progressive). CAR T-cell therapy is a type of treatment in which a patient's T cells (a type of immune system cell) are changed in the laboratory so t... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Recurrent Astrocytoma, IDH-Mutant, Grade 3, Recurrent Astrocytoma, IDH-Mutant, Grade 4, Recurrent Glioblastoma
A Study to Evaluate the Safety and Tolerability of Eravacycline in Pediatric Patients Aged 8 to 17 With Complicated Intra-abdominal Infections (cIAI)
Recruiting
A Phase 2 trial to assess safety, tolerability, and pharmacokinetics of eravacycline in pediatric patients aged 8 to \<18 years with cIAI.
Gender:
ALL
Ages:
Between 8 years and 17 years
Trial Updated:
06/24/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Complicated Intra-abdominal Infections (cIAI)
FOLFOX, Botensilimab, and Balstilimab for the Treatment of Localized Rectal Cancer Before Surgery
Recruiting
This phase II trial tests how well fluorouracil, oxaliplatin and leucovorin calcium (folinic acid) (FOLFOX) with botensilimab and balstilimab given before surgery (neoadjuvant) works in treating patients with rectal adenocarcinoma that has not spread to other parts of the body (localized). Currently, neoadjuvant therapy for rectal cancer includes chemotherapy and chemoradiation. Despite these aggressive treatments, only about half of patients achieve a complete clinical response. In fact, over h... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Rectal Adenocarcinoma, Stage IIA Rectal Cancer AJCC v8, Stage III Rectal Cancer AJCC v8
A Phase 1 Study of AOH1996 in Patients With Relapsed/Refractory Acute Myeloid Leukemia
Recruiting
This phase 1 trial tests safety, side effects, and best dose of AOH1996 for the treatment of patients with acute myeloid leukemia (AML) that has come back after a period of improvement (relapsed) or AML that has not responded to previous treatment (refractory). AOH1996 is in a class of medications called PCNA inhibitors. It inhibits cancer growth and induces deoxyribonucleic acid (DNA) damage. This may help keep cancer cells from growing and damage cancer cell DNA. Giving AOH1996 may be safe, to... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Recurrent Acute Myeloid Leukemia, Refractory Acute Myeloid Leukemia
Randomised Clinical Trial to Investigate Efficacy and Safety of Benralizumab 30 mg SC as an add-on Therapy in Uncontrolled Eosinophilic Asthma Patients Treated With Medium-dose ICS-LABA Compared to Conventional Escalation to High-dose ICS-LABA Treatment
Recruiting
This study evaluates the efficacy and safety of benralizumab as an add-on therapy in uncontrolled eosinophilic asthma participants treated with medium-dose ICS-LABA compared to the conventional treatment step of escalation of inhaled therapy to high-dose ICS-LABA.
Gender:
ALL
Ages:
Between 12 years and 75 years
Trial Updated:
06/24/2025
Locations: Research Site, Inglewood, California
Conditions: Eosinophilic Asthma
2245 - 2256 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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