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California Paid Clinical Trials
A listing of 5615 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1957 - 1968 of 5615
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California is currently home to 5615 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
A Study of BLB-201 RSV Vaccine in Infants and Children
Recruiting
This Phase 1/2a trial is a randomized, placebo-controlled trial to evaluate the safety, tolerability and immunogenicity of two ascending doses (10\^6 PFU and 10\^7 PFU) of intranasal BLB-201 (a recombinant parainfluenza virus type 5) administered in infants (8-24 months of age) and children (18-59 months of age) who may or may not have had prior respiratory syncytial virus (RSV) infection.
Gender:
ALL
Ages:
Between 6 months and 5 years
Trial Updated:
06/30/2025
Locations: Paradigm Clinical Research, La Mesa, California
Conditions: Respiratory Syncytial Virus Infections
FAPI PET for Lung Fibrosis
Recruiting
This is a prospective exploratory biodistribution study in patients with interstitial lung disease (ILD).
The purpose of this research study is to determine where and to which degree the FAPI tracer (68Ga-FAPI-46) accumulates in normal and fibrotic lung tissues of patients with interstitial lung disease.
The study will include patients with interstitial lung disease who have or will initiate a new ILD medication OR will undergo tissue biopsy or surgery of the lung.
The study will include 30 p... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/30/2025
Locations: UCLA / Jonsson Comprehensive Cancer Center, Los Angeles, California
Conditions: Interstitial Lung Disease, Idiopathic Interstitial Pneumonias, Drug-Induced Pneumonitis, Hypersensitivity Pneumonitis, Radiation Pneumonitis, Pneumoconiosis, Pulmonary Fibrosis
Solid Tumor Analysis for HLA Loss of Heterozygosity (LOH) and Apheresis for CAR T- Cell Manufacturing
Recruiting
Objective:
To collect information on how often a solid tumor cancer might lose the Human Leukocyte Antigen (HLA) by next generation sequencing and perform apheresis to collect and store an eligible participant's own T cells for future use to make CAR T-Cell therapy for their disease treatment.
Design:
This is a non-interventional, observational study to evaluate participants with solid tumors with a high risk of relapse for incurable disease. No interventional therapy will be administered on... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/30/2025
Locations: City of Hope, Duarte, California
Conditions: Solid Tumor, Adult, Colorectal Cancer, Non Small Cell Lung Cancer, Pancreatic Cancer, CRC, NSCLC, Pancreas Cancer, Mesothelioma, Ovarian Cancer, Ovarian Neoplasms, Ovarian Carcinoma, Mesothelioma, Malignant, Mesothelioma; Lung, Cancer, Triple Negative Breast Cancer (TNBC), Renal Cell Carcinoma (Kidney Cancer), Head and Neck Squamous Cell Carcinoma HNSCC
A Study of 177Lu-FAP-2286 in Advanced Solid Tumors
Recruiting
Fibroblast activation protein (FAP) is a cell surface protein that is highly expressed on the surface of cancer-associated fibroblasts (CAFs) present in the tumor microenvironment of most epithelial cancers, whereas limited expression of FAP is observed in normal tissues. In some cancers of mesenchymal origin, notably sarcoma and mesothelioma, FAP expression has also been observed on the tumor cells themselves. Given the restricted expression profile, FAP is a promising target for peptide-target... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/30/2025
Locations: Hoag Hospital Irvine, Irvine, California
Conditions: Solid Tumor
NEXUS Aortic Arch Clinical Study to Evaluate Safety and Effectiveness
Recruiting
Prospective, non-randomized, multi-center clinical investigation of the NEXUS™ Aortic Arch Stent Graft System (NEXUSTM) for the treatment of thoracic aortic lesions involving the aortic arch with a proximal landing zone, native or previously implanted surgical graft, in the ascending aorta and with a brachiocephalic trunk native landing zone.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/30/2025
Locations: University of California San Diego Medical Center, La Jolla, California
Conditions: Aortic Dissection, Aortic Aneurysm, Intramural Hematoma, Penetrating Aortic Ulcer
The ExTINGUISH Trial of Inebilizumab in NMDAR Encephalitis
Recruiting
Determine the difference in the modified Rankin score at 16 weeks in participants with anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis treated with "first-line" immunomodulatory therapies provided as standard-of-care, and either inebilizumab (investigational agent) or placebo.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/30/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Autoimmune Encephalitis, Encephalitis
TrialNet Pathway to Prevention of T1D
Recruiting
Rationale:
The accrual of data from the laboratory and from epidemiologic and prevention trials has improved the understanding of the etiology and pathogenesis of type 1 diabetes mellitus (T1DM). Genetic and immunologic factors play a key role in the development of T1DM, and characterization of the early metabolic abnormalities in T1DM is steadily increasing. However, information regarding the natural history of T1DM remains incomplete. The TrialNet Natural History Study of the Development of T... Read More
Gender:
ALL
Ages:
Between 2 years and 45 years
Trial Updated:
06/30/2025
Locations: Childrens Hospital of Orange County, Orange, California
Conditions: Diabetes Mellitus, Type 1
TIDES 2.0: Prevalence and Longitudinal Course of Depression, Anxiety, and Behavior Problems in Children With Cystic Fibrosis Under 12 Years of Age
Recruiting
This is a longitudinal, observational epidemiological study designed to estimate the prevalence of depression, anxiety, and behavior problems in children ages 18 months through 11 years with cystic fibrosis (CF).
Gender:
ALL
Ages:
Between 18 months and 11 years
Trial Updated:
06/29/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Cystic Fibrosis (CF)
Trigeminal Nerve Stimulation for Children With Prenatal Alcohol Exposure
Recruiting
This is an open-label trial of trigeminal nerve stimulation (TNS) for children aged 8-12 years with attention deficit hyperactivity disorder (ADHD) putatively due to prenatal alcohol exposure (PAE). TNS has been successful in treating pediatric ADHD generally and it is US Food and Drug Administration (FDA)-cleared for this condition. But this will be the first time it is tried for ADHD specifically associated with PAE. In TNS, a weak electric current is applied to the child's forehead overnight... Read More
Gender:
ALL
Ages:
Between 8 years and 12 years
Trial Updated:
06/29/2025
Locations: University of California Los Angeles Semel Institute Division of Child & Adolescent Psychiatry, Los Angeles, California
Conditions: Fetal Alcohol Spectrum Disorders, Attention Deficit Hyperactivity Disorder
A Long-Term Study of ALKS 2680 in Subjects With Narcolepsy and Idiopathic Hypersomnia
Recruiting
The purpose of this study is to continue to measure the safety, tolerability, and durability of treatment effect in subjects with Narcolepsy Type 1 (NT1), Narcolepsy Type 2 (NT2), or Idiopathic Hypersomnia (IH) when taking ALKS 2680 tablets.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
06/29/2025
Locations: Alkermes Investigational Site, Los Angeles, California
Conditions: Narcolepsy Type 1, Narcolepsy Type 2, Idiopathic Hypersomnia
Tissue Repair Gel in Venous Leg Ulcers (US)
Recruiting
The goal of this clinical trial is to learn if TR987 0.1% gel + Standard of Care works better than Standard of Care alone to treat Venous Leg Ulcers (VLUs). It will also provide additional information about the safety of drug TR987 0.1% gel.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/29/2025
Locations: Clincial Research Site 43C, Castro Valley, California
Conditions: Venous Leg Ulcer, Venous Ulcer, Venous Stasis Ulcer, Venous Stasis, Wound Heal, Wounds, Venous Insufficiency of Leg, Non-healing Wound
ACE2016 in Adult Subjects With Locally Advanced or Metastatic Solid Tumors Expressing Epidermal Growth Factor Receptor (EGFR)
Recruiting
ACE2016 is an off-the-shelf, allogeneic gamma delta T (gdT) cell therapy derived from healthy donors, that is under investigation for the treatment of Locally Advanced or Metastatic Solid Tumors Expressing Epidermal Growth Factor Receptor (EGFR).
The ACE2016-001 study is an open-label, Phase I, first-in-human (FIH) study that aims to evaluate the safety and tolerability, persistency, pharmacodynamics and efficacy of ACE2016 in patients with Locally Advanced or Metastatic Solid Tumors Expressing... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/28/2025
Locations: University of California San Diego, San Diego, California
Conditions: Locally Advanced Solid Tumor, Metastatic Solid Tumor
1957 - 1968 of 5615
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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