Search
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.
1009 - 1020 of 5602
Match to Clinical Trials
Access to cutting-edge treatments
Latest clinical trials
Find trials in your area
Search by Name
Filter by Condition
Filter by Location
Filter by Age
Filter by Type
Gender
Type of Study
Clinical Trial Phase
Popular Cities
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
Featured Offer
Find the Best GLP-1 Weight Loss Providers (2025)
Recruiting
Cutting-edge GLP-1 treatments like semaglutide and tirzepatide are helping thousands lose weight with medically guided support. But with so many online providers, how do you know which programs are trusted, affordable, and right for you?
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
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
A Double-blind Study Evaluating the Efficacy, Safety, and Tolerability of Zorevunersen in Patients With Dravet Syndrome
Recruiting
The purpose of the study is to evaluate the efficacy, safety, and tolerability of zorevunersen in Patients with Dravet syndrome.
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
08/05/2025
Locations: Cedars Sinai Medical Center, Los Angeles, California
Conditions: Dravet Syndrome
A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose
Recruiting
This study aims to check how safe and well-tolerated a second dose of RSVpreF is when given during later pregnancies, and to see how long the immunity lasts from a single dose given during a previous pregnancy by examining the blood of nonpregnant participants who had the vaccine before.
Gender:
ALL
Ages:
0 years and above
Trial Updated:
08/05/2025
Locations: Lucile Packard Children's Hospital-Labor and Delivery Unit, Palo Alto, California
Conditions: RSV Infection
Study to Investigate the Effect of Renal Impairment on the Pharmacokinetics, Safety, and Tolerability of AZD6234
Recruiting
This study will evaluate the pharmacokinetics (PK), safety, and tolerability of single subcutaneous dose of AZD6234 with end stage renal disease, severe, and possibly moderate and mild renal impairment in comparison to a matched healthy control group.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
08/05/2025
Locations: Research Site, Lake Forest, California
Conditions: Renal Impairment
LIVERAGE™ - Cirrhosis: A Study to Test Whether Survodutide Helps People With a Liver Disease Called NASH/MASH Who Have Cirrhosis
Recruiting
This study is open to adults who are at least 18 years old and have:
* A confirmed liver disease called non-alcoholic steatohepatitis (NASH) or
* A confirmed liver disease called metabolic-associated steatohepatitis (MASH)
* BMI of 27 kg/m2 or more or
* 25 kg/m2 or more if the participant is Asian.
People with a history of other chronic liver diseases or high alcohol intake cannot take part in this study. The purpose of this study is to find out whether a medicine called survodutide helps peop... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: Clinnova Research Solutions, Anaheim, California
Conditions: Metabolic Dysfunction Associated Steatohepatitis
A Study to Learn How PF-06821497 (Mevrometostat) Works in Men With Metastatic Castration-resistant Prostate Cancer.
Recruiting
This study will explore whether a combination of the investigational drug PF-06821497 and enzalutamide will work better than taking enzalutamide alone in participants with mCRPC who are ARSi or abiraterone naïve.
Gender:
MALE
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: Los Angeles Cancer Network (LACN), Anaheim, California
Conditions: Metastatic Castration-Resistant Prostate Cancer
A Study to Test Long-term Treatment With Brigimadlin in People With Solid Tumours Who Took Part in a Previous Study With This Medicine
Recruiting
This study is open to adults who participated in a previous clinical study with brigimadlin.
The goal of this study is to find out how well people with solid tumours tolerate long-term treatment with brigimadlin. Brigimadlin is a so-called MDM2 inhibitor that is being developed to treat cancer.
Participants are grouped in cohorts depending on their treatment in the previous study:
* Cohort 1a got brigimadlin and continues treatment with brigimadlin
* Cohort 1b got brigimadlin for 4 or less tr... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: Precision NextGen Oncology, Beverly Hills, California
Conditions: Solid Tumours
A Study of the Pan-KRAS Inhibitor LY4066434 in Participants With KRAS Mutant Solid Tumors
Recruiting
The main purpose of the study is to assess whether the study drug, LY4066434, is safe and tolerable when administered to participants with locally advanced or metastatic solid tumors with certain KRAS mutations. LY4066434 will be given alone or in combination with other treatments. The study will have 2 parts: monotherapy dose escalation and dose optimization. The study is expected to last up to approximately 5 years.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: City of Hope, Duarte, California
Conditions: Pancreatic Ductal Adenocarcinoma, Non-small Cell Lung Cancer, Colorectal Cancer, Advanced Solid Tumor, Metastatic Solid Tumor
A Study of BG-C477 in Participants With Advanced Solid Tumors
Recruiting
The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary antitumor activity of BG-C477 alone and in combination with anticancer agents in participants with selected advanced solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: City of Hope National Medical Center, Duarte, California
Conditions: Advanced Solid Tumors
A Trial to Evaluate Efficacy and Safety of Buloxibutid in People With Idiopathic Pulmonary Fibrosis.
Recruiting
The ASPIRE trial is a 52 week randomized, double-blind, placebo-controlled, parallel-group, multicenter trial in which the efficacy, safety, and pharmacokinetics of orally administered buloxibutid, either on top of stable IPF therapy or as monotherapy, are assessed in participants with IPF.
Trial website: www.aspire-ipf.com
Gender:
ALL
Ages:
40 years and above
Trial Updated:
08/05/2025
Locations: Keck Medicine of University of Southern California, Los Angeles, California
Conditions: Idiopathic Pulmonary Fibrosis (IPF)
A First-in-human Study of BGB-53038, a Pan-KRAS Inhibitor, Alone or in Combinations in Participants With Advanced or Metastatic Solid Tumors With KRAS Mutations or Amplification
Recruiting
This is a first-in-human (FIH), open-label, multicenter, dose escalation and dose expansion study to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics, and preliminary antitumor activity of BGB-53038 as monotherapy in participants with advanced or metastatic solid tumors harboring KRAS mutations or amplification, as well as when used in combination with tislelizumab (also known as BGB-A317) in participants with nonsquamous non-small cell lung cancer (NSCLC) and used in c... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: Usc Norris Comprehensive Cancer Center (Nccc), Los Angeles, California
Conditions: Metastatic Solid Tumors, Advanced Non-squamous Non-small-cell Lung Cancer, Advanced Colorectal Cancer, Advanced Pancreatic Ductal Adenocarcinoma, Advanced Gastric Cancer, Advanced Gastroesophageal Junction Cancer, Advanced Esophageal Adenocarcinoma
External Beam Radiation Therapy in Combination With Talquetamab for the Treatment of Multiple Myeloma Patients With Extramedullary Disease
Recruiting
This phase I/II trial tests the safety and effectiveness of extramedullary disease (EMD)-directed external beam radiation therapy (EBRT) in combination with talquetamab for the treatment of multiple myeloma patients with extramedullary disease. Extramedullary disease in multiple myeloma involves the infiltration of organs and soft tissues by malignant plasma cells and has proven difficult to treat. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells an... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/05/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Extramedullary Disease in Multiple Myeloma, Multiple Myeloma
A Study to Find Out How Nusinersen is Processed in the Body When Given Through the ThecaFlex DRx™ System in Adult and Pediatric Participants With Spinal Muscular Atrophy (PIERRE-PK)
Recruiting
In this PIERRE-PK study, researchers will learn how the body processes nusinersen when it is given through the ThecaFlex DRx™ System, compared to when nusinersen is given by lumbar puncture (LP). The ThecaFlex DRx system is an investigational implantable medical device developed by Alcyone Therapeutics, Inc. It consists of a catheter, which is a flexible tube, connected to a port which is placed under the skin. Alcyone Therapeutics, Inc. has an ongoing study called PIERRE to test the ThecaFlex D... Read More
Gender:
ALL
Ages:
3 years and above
Trial Updated:
08/05/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Muscular Atrophy, Spinal
1009 - 1020 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.
Search Clinical Trials in California by Condition
See All Conditions