Search
California Paid Clinical Trials
A listing of 5616 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
2233 - 2244 of 5616
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 5616 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
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Featured Trial
Chronic Cough Research Study
Recruiting
Are you tired of living with chronic cough? Our research study is now looking to enroll people from all backgrounds to help research potential new treatment options for chronic cough.
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
Conditions:
Chronic Cough
Refractory or Unexplained Chronic Cough
Cough
Asthma
Sinusitis
Featured Offer
Lose Weight with GLP-1 Medications
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to semaglutide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
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 $100 off your first program with code policy-lab-100.
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 $100 off your first program with code policy-lab-100.
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Featured Trial
Depressive disorder Clinical Study
Recruiting
A clinical study for people that suffer with Depressive disorder
Conditions:
Depressive disorder
Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis
Recruiting
Patients with Parkinson's disease (PD) sometimes experience symptoms affecting their movement, such as slowness, tremor, stiffness, and balance or walking problems. Many patients also have other symptoms not related to movement, called non-motor symptoms, which may affect one's mood or emotions, memory or thinking, or cause one to see or hear things that aren't real (hallucinations) or believe things that aren't true (delusions). Hallucinations or delusions, together called psychosis, occur in u... Read More
Gender:
ALL
Ages:
40 years and above
Trial Updated:
06/12/2025
Locations: VA Loma Linda Healthcare System, Loma Linda, CA, Loma Linda, California
Conditions: Parkinson's Disease Psychosis
KEYMAKER-U01 Umbrella Master Study: Studies of Investigational Agents With Either Pembrolizumab (MK-3475) Alone or With Pembrolizumab PLUS Chemotherapy in Participants With Non-small Cell Lung Cancer (NSCLC) (MK-3475-U01/KEYMAKER-U01)
Recruiting
This study is referred to as the "umbrella master protocol" for pembrolizumab (MK-3475) in the treatment of non-small cell lung cancer (NSCLC). This pembrolizumab NSCLC umbrella master protocol uses a platform design and consists of this master screening study and seven substudies. Each substudy will enroll a different population of NSCLC participants.
The goal of this umbrella master protocol is to screen potential participants with NSCLC for enrollment into 1 of 7 substudies. Participants mus... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/12/2025
Locations: City of Hope ( Site 0014), Duarte, California
Conditions: Carcinoma, Non-Small-Cell Lung
Phase 1/2 Study of UCART22 in Patients With Relapsed or Refractory CD22+ B-cell Acute Lymphoblastic Leukemia (BALLI-01)
Recruiting
This is a first-in-human, open-label, dose escalation and expansion study of UCART22 administered intravenously to patients with relapsed or refractory B-cell acute Lymphoblastic Leukemia (B-ALL). The purpose of this study is to evaluate the safety and clinical activity of UCART22 and determine the Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D)
Gender:
ALL
Ages:
Between 15 years and 50 years
Trial Updated:
06/12/2025
Locations: University of California, Los Angeles (UCLA) - Medical Center, Los Angeles, California
Conditions: B-cell Acute Lymphoblastic Leukemia
APOL1 Long-term Kidney Transplantation Outcomes Network (APOLLO)
Recruiting
The APOLLO study is being done in an attempt to improve outcomes after kidney transplantation and to improve the safety of living kidney donation based upon variation in the apolipoprotein L1 gene (APOL1). Genes control what is inherited from a family, such as eye color or blood type. Variation in APOL1 can cause kidney disease. African Americans, Afro-Caribbeans, Hispanic Blacks, and Africans are more likely to have the APOL1 gene variants that cause kidney disease. APOLLO will test DNA from ki... Read More
Gender:
ALL
Ages:
All
Trial Updated:
06/12/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Kidney Diseases, Kidney Failure, Kidney Disease, Chronic
Intralesional Cyclosporine for Alopecia Areata
Recruiting
Alopecia areata (AA) is a chronic autoimmune disease that causes non-scarring, focal areas of hair loss. Due to its resulting disfigurement and unpredictable course, it is recognized as a serious medical condition with severe emotional and psychosocial distress, including a high prevalence of depression and anxiety.1-4 Treatment options for alopecia areata are limited.
Cyclosporine has been used as an effective therapeutic option in the treatment of psoriasis. Additionally, the use of oral cycl... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/11/2025
Locations: University of California, Davis - Dermatology Department, Sacramento, California
Conditions: Alopecia Areata
A Study of Mosliciguat in PH-ILD
Recruiting
This is a Phase 2, randomized, double-blind, placebo-controlled, multi-center clinical study to evaluate the safety and efficacy of inhaled mosliciguat in participants with pulmonary hypertension associated with interstitial lung disease (PH-ILD).
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
06/11/2025
Locations: Ronald Reagan UCLA Medical Center, Los Angeles, California
Conditions: Pulmonary Hypertension, Interstitial Lung Disease, Lung Diseases, Vascular Diseases, Cardiovascular Diseases, Fibrosis
CGM for Management of Type 2 Diabetes in Pregnancy
Recruiting
The goal of this clinical trial is to learn if continuous glucose monitoring works better than self-monitoring of blood glucose (fingersticks) to treat type 2 diabetes in pregnancy. It will also learn about all risk factors (biologic, personal, social) for maternal and infant complications in type 2 diabetes pregnancies. The main questions it aims to answer are:
1. Does continuous glucose monitoring improve infant outcomes compared to self-monitoring of blood glucose?
2. Does continuous glucose... Read More
Gender:
FEMALE
Ages:
Between 18 years and 50 years
Trial Updated:
06/11/2025
Locations: University of California at San Diego, San Diego, California
Conditions: Type 2 Diabetes Mellitus (T2DM), Pregnancy
An Efficacy, Safety, and Tolerability Study of VRDN-003 in Participants With Active Thyroid Eye Disease (TED)
Recruiting
This is a clinical trial assessing the efficacy, safety, and tolerability of an investigational drug, VRDN-003, in participants with active Thyroid Eye Disease (TED).
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
06/11/2025
Locations: Alliance Research Institute - Canoga Park, Canoga Park, California
Conditions: Thyroid Eye Disease
A Study of Andecaliximab in Participants With Fibrodysplasia Ossificans Progressiva (FOP)
Recruiting
This study is researching an experimental drug called andecaliximab. The study will include pediatric and adult patients with fibrodysplasia ossificans progressiva (FOP). The study will evaluate how safe and effective andecaliximab is in patients with FOP.
The study is looking at several research questions, including:
* Safety of andecaliximab in participants with FOP
* Whether andecaliximab reduces the number of new heterotopic bone lesions (Heterotopic Ossification; HO)
* Whether andecalixim... Read More
Gender:
ALL
Ages:
2 years and above
Trial Updated:
06/11/2025
Locations: University of California San Francisco (UCSF), San Francisco, California
Conditions: Fibrodysplasia Ossificans Progressiva
A Study of Toripalimab in Combination With Cisplatin and Gemcitabine in Participants With Recurrent Metastatic Nasopharyngeal Cancer
Recruiting
This study aims to investigate toripalimab with chemotherapy in participants with nasopharyngeal cancer.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/11/2025
Locations: University of California, Irvine, Irvine, California
Conditions: Nasopharyngeal Cancer Recurrent
RECOVER-SLEEP: Platform Protocol
Recruiting
The platform protocol is designed to be flexible so that it is suitable for a range of study settings and intervention types. Therefore, the platform protocol provides a general protocol structure that can be shared by multiple interventions and allows comparative analysis across the interventions. For example, objectives, measures, and endpoints are generalized in the platform protocol, but intervention-specific features are detailed in separate appendices.
This platform protocol is a prospect... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: University of California San Francisco General Hospital, San Francisco, California
Conditions: Long COVID, Long COVID-19, Hypersomnia, Sleep Disturbance
EXActDNA-003 / NSABP B-64: Study of Molecular Residual Disease Detection in Breast Cancer (MRD)
Recruiting
The EXActDNA-003 study will prospectively enroll participants who are planning to undergo chemotherapy for high-risk, early breast cancer, who are willing to provide tissue and blood specimens for circulating tumor DNA (ctDNA) analysis.
Participants will be followed for up to 5.5 years.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: Stanford Cancer Institute, Palo Alto, California
Conditions: Breast Cancer
2233 - 2244 of 5616
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