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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.
445 - 456 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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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.
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
Phase 3 Study of Adjunctive Treatment With Seltorexant in Adult and Elderly Participants With Major Depressive Disorder and Insomnia Symptoms
Recruiting
The purpose of this study is to know how well seltorexant works, and also to evaluate safety and maintenance effect of seltorexant compared with placebo as an adjunctive therapy to an antidepressant in improving depressive symptoms in participants with major depressive disorder with insomnia symptoms (MDDIS) who have had an inadequate response to current antidepressant therapy with a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI).
Gender:
ALL
Ages:
Between 18 years and 74 years
Trial Updated:
08/14/2025
Locations: PAMOJA Clinical Institute LLC, Anaheim, California
Conditions: Depressive Disorder, Major
A Phase 2a/b Study of the Efficacy and Safety of Subcutaneous Amlitelimab in Adults With Nonresponsive Celiac Disease
Recruiting
This is a Phase 2a/b, randomized, double-blind, placebo-controlled, parallel-group, 6-arm study to evaluate the efficacy and safety of amlitelimab in adult participants with non-responsive celiac disease (NRCD) who are on a gluten free diet (GFD) with and without simulated inadvertent gluten exposure (SIGE).
The primary purpose of this study is to demonstrate the efficacy of subcutaneous (SC) amlitelimab in male and female participants (aged 18 to 75 years, inclusive) with NRCD. The study will... Read More
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/14/2025
Locations: FOMAT Medical Research - inSite Digestive Health Care - Arcadia- Site Number : 8400052, Arcadia, California
Conditions: Coeliac Disease, Celiac Disease
Safety of MT-401-OTS in Patients With Relapsed AML or MDS
Recruiting
This study is a Phase 1 multicenter, open-label study evaluating the safety and efficacy of escalating doses of MT-401-OTS in 2 participant populations: 1) Those with intermediate or high-risk AML per 2022 ELN criteria who have evidence of MRD and/or \Read More
Gender:
ALL
Ages:
65 years and above
Trial Updated:
08/14/2025
Locations: City of Hope Center (City of Hope National Medical Center, City of Hope Medical Center), Duarte, California
Conditions: Acute Myeloid Leukemia, in Relapse, MDS
A Study to Assess the Efficacy and Safety of Efgartigimod IV in Adult Participants With Primary Immune Thrombocytopenia
Recruiting
The main purpose of this study is to look at the effect (efficacy) and safety of efgartigimod IV in participants with primary immune thrombocytopenia (ITP). After an up to 2 weeks screening period, eligible participants will be randomized in a 2:1 ratio to receive either efgartigimod IV or placebo IV, respectively during the double-blinded treatment period (DBTP). At the end of the treatment period (up to 24 weeks), all participants will receive efgartigimod IV during the first 52-week open-labe... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Primary Immune Thrombocytopenia (ITP)
A Randomized Controlled Trial Testing the Effect of the Youth Mindful Awareness Program on Negative Affect (YMAP2).
Recruiting
The goal of this randomized clinical trial is to compare the effects of an online mindfulness program to an active supportive comparison condition and a no-intervention control group on reducing and preventing mood and anxiety symptoms in at-risk youth. Youth who are high on trait negative affect will be randomized to one of the three conditions. The primary outcomes of interest are reductions in momentary negative affect and internalizing problems in adolescents ages 12 to 17 years old. All par... Read More
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
08/14/2025
Locations: University of California, Los Angeles, Los Angeles, California
Conditions: Prevention, Control
A Phase III Study to Investigate Efficacy, Safety and Tolerability of Iptacopan Compared With Placebo in Participants Aged 18 to 75 Years With gMG.
Recruiting
The study is a randomized, double-blind, placebo-controlled, multicenter, Phase III study, to evaluate efficacy, safety and tolerability of iptacopan in patients with AChR+ gMG who are on stable SOC treatment. Participants who meet the eligibility criteria will be randomized in a ratio of 1:1, to receive either iptacopan or matching placebo, for 6 months (180 days) while continuing on a stable SOC treatment. The randomization will be stratified based on region.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/14/2025
Locations: Fullerton Neuro and Headache Ctr, Fullerton, California
Conditions: Generalized Myasthenia Gravis
A Study to Evaluate the Safety and Tolerability of Efgartigimod PH20 SC Given by Prefilled Syringe in Kidney Transplant Recipients With Antibody-Mediated Rejection (AMR)
Recruiting
The purpose of this study is to assess the safety, tolerability, and efficacy of efgartigimod PH20 SC given by a prefilled syringe in participants with Antibody-Mediated Rejection (AMR) after kidney transplantation.
After a screening period of up to 6 weeks, eligible participants will be randomized in a 1:1:1 ratio. The study drug will be administered subcutaneously while patients remain on their standard background immunosuppression therapy (tacrolimus, mycophenolate mofetil, steroids) during... Read More
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
08/14/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Antibody-mediated Rejection
A Study to Evaluate Preventive Treatments for Talquetamab-related Oral Toxicity
Recruiting
The purpose of this study is to identify preventive treatments that can minimize the occurrence, severity, and duration of talquetamab-related taste changes (dysgeusia), during the prophylaxis (preventive) treatment phase, and to better characterize the signs or symptoms of talquetamab-related taste changes.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Relapse Multiple Myeloma, Refractory Multiple Myeloma
A Study to Evaluate BMS-986470 in Healthy Volunteers and Participants With Sickle Cell Disease
Recruiting
The purpose of this study is to evaluate the safety and tolerability, pharmacokinetics and pharmacodynamics, pH and food effect, and preliminary efficacy of BMS-986470 in healthy volunteers and participants with sickle cell disease.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Local Institution - 0021, La Jolla, California
Conditions: Anemia, Sickle Cell, Healthy Volunteers
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:
08/14/2025
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
A Study to Learn About the Study Medicine Aztreonam-Avibactam (ATM-AVI) in Infants and Newborns Admitted in Hospitals With Bacterial Infection (CHERISH)
Recruiting
The purpose of this study is to learn about the safety and effects of ATM-AVI for the possible treatment of infections caused by a type of bacteria called gram-negative bacteria.
The study medicine is a combination of an antibiotic, aztreonam (ATM), and another medicine, avibactam (AVI), which is used to help stop bacteria from being resistant to antibiotics. Antibiotics are medicines that fights bacteria and infections.
The study will include newborns and infants up to 9 months of age who are... Read More
Gender:
ALL
Ages:
39 weeks and below
Trial Updated:
08/14/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Gram-negative Bacterial Infection
A Study to Compare Sacituzumab Tirumotecan (MK-2870) Monotherapy Versus Treatment of Physician's Choice as Second-line Treatment for Participants With Recurrent or Metastatic Cervical Cancer (MK-2870-020/TroFuse-020/Gog-3101/ENGOT-cx20)
Recruiting
This study will have two phases: a sacituzumab tirumotecan safety run-in and a Phase 3 portion. The safety run-in phase will be used to evaluate the efficacy and safety of sacituzumab tirumotecan at the dose for evaluation in the Phase 3 portion. The purpose of this study is to compare the efficacy and safety of sacituzumab tirumotecan versus treatment of physician's choice as second-line treatment for participants with recurrent or metastatic cervical cancer in the Phase 3 portion.
The primary... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Moores Cancer Center-Clinical Trials Office - Gynecological Oncology ( Site 4125), La Jolla, California
Conditions: Cervical Cancer
445 - 456 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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