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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.
409 - 420 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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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
Featured Trial
Stroke Clinical Study
Recruiting
A clinical study for people that suffer with Stroke
Conditions:
Stroke
A Study Investigating Intravenous Human Normal Immunoglobulin 10% in Adults With Chronic Immune Thrombocytopenia (ITP)
Recruiting
The purpose of this study is to evaluate the efficacy and safety of KIg 10 (Intravenous Immunoglobulin 10%) in adult patients with chronic primary ITP
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
08/14/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Chronic Primary Immune Thrombocytopenia (ITP)
Study of Lenacapavir as a Once-Yearly Injection for HIV Pre-exposure Prophylaxis (PrEP)
Recruiting
The goal of this clinical study is to learn more about the study drug lenacapavir (LEN), safety, tolerability, and pharmacokinetics (how LEN is absorbed, modified, distributed, and removed from the body of the participants) of once-yearly intramuscular for HIV pre-exposure prophylaxis (PrEP) in people with an indication for PrEP.
The primary objective of this study is to evaluate the pharmacokinetics (PK) and the safety and tolerability of intramuscular (IM) every 12 months (Q12M) LEN for PrEP... Read More
Gender:
ALL
Ages:
16 years and above
Trial Updated:
08/14/2025
Locations: Mills Clinical Research, Los Angeles, California
Conditions: HIV Pre-exposure Prophylaxis
Wearable Device and Behavioral Support for Enhancing Arm Use After Stroke
Recruiting
The goal of this study is to determine the effectiveness of behavioral support and feedback from a wearable device that senses arm movement in improving upper extremity function in a pilot, randomized controlled trial with chronic stroke patients
Gender:
ALL
Ages:
Between 18 years and 84 years
Trial Updated:
08/14/2025
Locations: University of California Irvine, Irvine, California
Conditions: Chronic Stroke Patients
A Study to Evaluate the Efficacy and Safety of IMG-007 in Adult Participants With Moderate-to-Severe Atopic Dermatitis
Recruiting
The purpose of this study is to evaluate the efficacy and safety of different dose regimens of IMG-007, compared to placebo.
Gender:
ALL
Ages:
Between 18 years and 74 years
Trial Updated:
08/14/2025
Locations: Antelope Valley Clinical Trials, Lancaster, California
A Study to Investigate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AZD4248 in Healthy Participants and Participants With Chronic Kidney Disease and Type 2 Diabetes and to Assess Home Measurements of Creatinine in a Non Interventional Cohort
Recruiting
This study will evaluate safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of single ascending doses (SAD) and multiple ascending doses (MAD) of AZD4248 administered as an oral solution and intravenous (IV) infusion. Additionally, the study investigates the non-interventional feasibility of home measurement of serum creatinine in participants with diabetic kidney disease (DKD).
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/14/2025
Locations: Research Site, Glendale, California
Conditions: Chronic Kidney Disease
A Study to Assess the Safety, Tolerability, and Pharmacokinetics of GIGA-2339 in Participants With Chronic Hepatitis B Virus Infection
Recruiting
The primary purpose of this study is to assess the safety and tolerability of single and multiple intravenous (IV) doses of GIGA-2339 in participants with chronic Hepatitis B Virus (HBV) infection.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Grifols Investigative site, Huntington Beach, California
Conditions: Hepatitis B Virus Infection
A Study of CC-97540 (BMS-986353), CD19-Targeted NEX-T CAR T Cells, in Participants With Active SLE Despite Immunosuppressants (Breakfree-SLE)
Recruiting
The purpose of this study is to evaluate the efficacy, safety and drug levels of CC-97540 in participants with active systemic lupus erythematosus (SLE) including lupus nephritis with inadequate response to glucocorticoids and at least 2 immunosuppressants.
Gender:
ALL
Ages:
16 years and above
Trial Updated:
08/14/2025
Locations: Local Institution - 0038, Los Angeles, California
Conditions: Lupus Erythematosus, Systemic, Lupus Nephritis
A Phase 3 Study to Evaluate the Safety and Efficacy of KarXT + KarX-EC for the Treatment of Agitation Associated With Alzheimer's Disease (ADAGIO-1)
Recruiting
The purpose of this study is to evaluate the efficacy and safety of KarXT + KarX-EC in adult participants with agitation related to Alzheimer's Disease.
Gender:
ALL
Ages:
Between 55 years and 90 years
Trial Updated:
08/14/2025
Locations: Local Institution - 1657, Anaheim, California
Conditions: Alzheimer Disease
A Study to Investigate Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and Immunogenicity of AZD1613 in Healthy Participants.
Recruiting
The purpose of the study is to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and immunogenicity of AZD1613 in healthy participants, including Japanese and Chinese descent.
Gender:
ALL
Ages:
Between 18 years and 50 years
Trial Updated:
08/14/2025
Locations: Research Site, Glendale, California
Conditions: Healthy
Tibulizumab Skin Healing and Inflammation Evaluation for Lasting Defense
Recruiting
The study is a Phase 2, multi-center, randomized, double-blind, placebo-controlled study to evaluate the effects of tibulizumab over 16 weeks (Period 1) in adults with hidradenitis suppurativa, followed by a 16-week open-label extension period in which all participants will receive tibulizumab (Period 2)
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
08/14/2025
Locations: Wallace Medical Group, Inc., Los Angeles, California
Conditions: Hidradenitis Suppurativa (HS)
A Study of Disitamab Vedotin in Adults With HER2 Expressing Advanced Breast Cancer
Recruiting
The purpose of this clinical study is to learn about the safety and effects of the study medicine (called disitamab vedotin) for the possible treatment of people with breast cancer that is hard to treat and has spread in the body (advanced cancer).
This study is seeking participants who:
* have breast cancer that is hard to treat and has spread in the body (advanced cancer)
* have tumors that have HER2 on them
* have received previous treatment for their advanced breast cancer
All participant... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Los Angeles Cancer Network, Anaheim, California
Conditions: Breast Cancer, Breast Neoplasms
A Study to Investigate Safety, Tolerability, Pharmacokinetics (PK), Pharmacodynamics (PD), and Immunogenicity of RO7669330 in Participants With Geographic Atrophy (GA) Secondary to Age-related Macular Degeneration (AMD)
Recruiting
The main purpose of this study is to assess the ocular and systemic safety and tolerability of RO7669330 in GA secondary to AMD after multiple unilateral intravitreal (IVT) doses.
Gender:
ALL
Ages:
55 years and above
Trial Updated:
08/14/2025
Locations: Retina-Vitreous Associates Medical Group, Beverly Hills, California
Conditions: Geographic Atrophy, Age-related Macular Degeneration
409 - 420 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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