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.
2209 - 2220 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
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
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).
Get $50 off your first order using promo code: policy-lab-50
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
Women's Ischemia Syndrome Evaluation (WISE) Pre-HFpEF
Recruiting
The purpose of this study is to examine small vessel disease (a condition in which the small arteries in the heart become narrowed). The investigators want to know how the small vessel disease contributes to pre-HFpEF (a condition with inadequate heart muscle function in the setting of preserved muscle pumping) and to better identify potential treatment for prevention of HFpEF. The main procedures of this study include up to 2 clinic visits (initial visit and a second clinical visit only if part... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Heart Failure With Preserved Ejection Fraction (HFpEF), Coronary Microvascular Dysfunction
Magnetic Resonance Imaging of Breast Cancer
Recruiting
To compare magnetic resonance imaging (MRI) with more well established diagnostic imaging techniques to determine which method best finds and defines breast cancer.
Gender:
FEMALE
Ages:
21 years and above
Trial Updated:
06/27/2025
Locations: Stanford University School of Medicine, Stanford, California
Conditions: Breast Cancer, Breast Cancer Non-invasive Breast Cancer
Identification of Secreted Markers for Tumor Hypoxia in Patients With Head and Neck or Lung Cancers
Recruiting
The purpose of this study is to identify and confirm new blood and tissue markers for prognosis and tumor hypoxia. Tumor hypoxia, or the condition of low oxygen in the tumor, has been shown to increase the risk of tumor spread and enhance tumor resistance to the standard treatment of radiation and chemotherapy in head and neck and lung cancers. We have recently identified several proteins or markers in the blood and in tumors (including osteopontin, lysyl oxidase, macrophage inhibiting factor an... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Stanford University School of Medicine, Stanford, California
A Study to Evaluate the Effects of Lithium, Valproic Acid, and Lamotrigine on the Pharmacokinetics of KarXT and Effects of KarXT on the Pharmacokinetics of Lithium, Valproic Acid, and Lamotrigine in Healthy Participants
Recruiting
The purpose of this study is to evaluate the effects of lithium, valproic acid, and lamotrigine on the single-dose pharmacokinetics (PK) of KarXT and the effect of KarXT on the single-dose PK of lithium, valproic acid, and lamotrigine in healthy participants.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/26/2025
Locations: CenExel Collaborative Neuroscience Research, LLC - Los Alamitos, Los Alamitos, California
Conditions: Healthy Volunteers
INDV-6001 Multiple-Dose Pharmacokinetic Study
Recruiting
This is a multicentre, open-label, multiple dose study of INDV-6001 in adult participants with moderate or severe OUD as defined by the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5).
The current study will evaluate the pharmacokinetics (PK), safety, and tolerability of INDV-6001 following multiple doses in participants with OUD to select optimum dosing regimens for future studies. Prior to receiving INDV-6001, participants will be stabilised on 12-16 mg of transmuco... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/26/2025
Locations: Artemis Institute for Clinical Research, San Diego, California
Conditions: Moderate to Severe Opioid Use Disorder
First-in-Human Study of OKI-219 in Advanced Solid Tumors and Advanced Breast Cancer
Recruiting
OKI-219-101 is a Phase 1a/1b, open-label, multicenter, dose-escalation study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PDx), and efficacy of OKI-219 as monotherapy and in combination with fulvestrant or trastuzumab. Phase 1a (Part A) will investigate escalating doses of OKI-219 monotherapy, and Phase 1b will investigate OKI-219 (at a tolerated dose determined in Part A) in combination with standard dose fulvestrant (Part B) or standard dose trastuzum... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: California Cancer Associates for Research and Excellence, Encinitas, California
Conditions: Advanced Cancer, Breast Cancer
A Longitudinal Multi-Omic Biomarker Profiling Study of Patients With Head & Neck Squamous Cell Carcinoma (HNSCC)
Recruiting
The study is a prospective, longitudinal, non-interventional, multicenter study of participants with HNSCC who will have tissue and blood based molecular biomarker profiling during their standard of care treatment.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: City of Hope, Duarte, California
Conditions: Head and Neck Squamous Cell Carcinoma
Gerofit and Cognition
Recruiting
Over 50% of the Veterans enrolled for VA health care are over the age of 65. Dementia prevalence increases with age, and with the increase in the population of people ages 65 and older, the total number of people with dementia is also increasing. Older Veterans often have comorbid PTSD, major depression and traumatic brain injury so that they are at 2 to 5 times the risk for cognitive impairment and dementia compared to the general population. There is evidence that exercise interventions in sed... Read More
Gender:
ALL
Ages:
65 years and above
Trial Updated:
06/26/2025
Locations: VA Greater Los Angeles Healthcare System, West Los Angeles, CA, West Los Angeles, California
Conditions: Aging, Cognitive Impairment, Physical Activity
Endotypic Traits and Obstructive Sleep Apnea Surgery
Recruiting
This study will examine factors associated with outcomes after soft palate surgery and medications (acetazolamide, eszopiclone) that may treat other potential causes of obstructive sleep apnea (loop gain, arousal threshold).
Gender:
ALL
Ages:
21 years and above
Trial Updated:
06/26/2025
Locations: UCLA Santa Monica Medical Center, Santa Monica, California
Conditions: Obstructive Sleep Apnea
Home OCT-Guided Treatment Versus Treat and Extend for the Management of Neovascular AMD
Recruiting
Home optical coherence tomography- guided treatment versus treat and extend for the management of neovascular age-related macular degeneration.
Gender:
ALL
Ages:
50 years and above
Trial Updated:
06/26/2025
Locations: Kent W. Small, MD, AMC, Glendale, California
Conditions: Neovascular Age-related Macular Degeneration
A Study to Understand How the Study Medicine (PF-06823859) Works in People With Active Idiopathic Inflammatory Myopathies [Dermatomyositis (DM) and Polymyositis (PM)]
Recruiting
The purpose of the study is to understand how the study medicine PF-06823859 works in people with idiopathic inflammatory myopathies (DM and PM). These disorders cause inflammation that weakens the muscles that are important for movement and may also cause skin rash in people with DM.
This study is seeking participants who:
* Are 18 years of age or older or minimum legal adult age as defined per local regulation, whichever is greater
* Have active DM or active PM.
* Are receiving a stable dose... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: 200 UCLA Medical Plaza, Los Angeles, California
Conditions: Myositis
Testing the Effectiveness of an Anti-cancer Drug, Triapine, When Used With Targeted Radiation-based Treatment (Lutetium Lu 177 Dotatate), Compared to Lutetium Lu 177 Dotatate Alone for Metastatic Neuroendocrine Tumors
Recruiting
This phase II trial compares the effect of adding triapine to lutetium Lu 177 dotatate versus lutetium Lu 177 dotatate alone (standard therapy) in shrinking tumors or slowing tumor growth in patients with neuroendocrine tumors that have spread from where they first started (primary site) to other places in the body (metastatic). Triapine may stop the growth of tumor cells by blocking some of the enzymes needed for deoxyribonucleic acid synthesis and cell growth. Lutetium Lu 177 dotatate is a rad... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: City of Hope Comprehensive Cancer Center, Duarte, California
Conditions: Metastatic Neuroendocrine Tumor
2209 - 2220 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