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California Paid Clinical Trials
A listing of 5599 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1693 - 1704 of 5599
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California is currently home to 5599 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.
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Recruiting
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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Evaluation of Dosing Procedures of Chemotherapy Treatment (Carboplatin) With the Contrast Agent Iohexol
Recruiting
This trial studies how well iohexol works in helping doctors calculate the dose of carboplatin given to patients with cancer. Drugs used in chemotherapy, such as carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Understanding how to best calculate the dose of carboplatin given to patients with cancer may help doctors learn how to improve the use of carboplatin in the future.
Gender:
MALE
Ages:
18 years and above
Trial Updated:
05/15/2025
Locations: UC San Diego Health System - Encinitas, Encinitas, California
Conditions: Malignant Solid Neoplasm
Clinical Trial to Evaluate the Safety and Efficacy of MeRT Treatment in Post-Traumatic Stress Disorder
Recruiting
The purpose of this study is to evaluate the safety and efficacy of individualized, Biometrics-guided Magnetic e-Resonance Therapy (MeRT) treatment of Post-Traumatic Stress Disorder
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
05/15/2025
Locations: BrainHealth Solutions, Costa Mesa, California
Conditions: Postconcussive Symptoms, Traumatic Brain Injury, PostTraumatic Stress Disorder
The Pediatric Anesthesia Quality Improvement Project
Recruiting
The Study is designed to collect information about adverse events that occur in children undergoing anesthesia in participating hospitals. Demographic information will be collected on all anesthetics. An analysis of each adverse event will be performed and entered into the database. From this information we will devise strategies to prevent these adverse events.
Gender:
ALL
Ages:
21 years and below
Trial Updated:
05/15/2025
Locations: Children's Hospital Los Angeles, Los Angeles, California
Conditions: Surgery, Anesthesia, Children
Longitudinal Study for Eosinophilic Granulomatosis With Polyangiitis
Recruiting
Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare immune system disorder that causes asthma, an excessive number of eosinophils (a type of white blood cell) in the blood, and the inflammation of blood vessels, or vasculitis. In order to properly treat EGPA, it is critical that the level of disease activity can be determined over the course of the disease. The purpose of this study is to determine new biological markers, or biomarkers, that may be used to assess the severity of this... Read More
Gender:
ALL
Ages:
All
Trial Updated:
05/15/2025
Locations: University of California San Diego, San Diego, California
Conditions: Eosinophilic Granulomatosis With Polyangiitis, Churg-Strauss Syndrome
A Trial of the Efficacy and Safety of SEP-363856 in Acutely Psychotic Participants With Schizophrenia
Recruiting
This is a Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Trial to Determine the the Efficacy and Safety of SEP-363856 in Acutely Psychotic Participants with Schizophrenia
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
05/14/2025
Locations: Clinical Innovations, Inc. dba CITrials (Bellflower) Site #131, Bellflower, California
Conditions: Schizophrenia
Study of the Oral Treatment MTR-601 in Cervical Dystonia
Recruiting
Study MTR-601-201 is an 8-week, randomized, placebo-controlled study to examine the safety, tolerability, and efficacy of MTR-601 in participants with cervical dystonia.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
05/14/2025
Locations: The Parkinson's and Movement Disorder Institute, Fountain Valley, California
Conditions: Cervical Dystonia
Phase 1 Study of ACE-232 to Treat Patients With Metastatic Castration-Resistant Prostate Cancer
Recruiting
This is an open label, phase I, multi-center study aiming to assess the safety and tolerability in patients with metastatic castration resistant prostate cancer (mCRPC).
Gender:
MALE
Ages:
18 years and above
Trial Updated:
05/14/2025
Locations: University of California San Diego, Moores Cancer Center, La Jolla, California
Conditions: Prostate Cancer (Adenocarcinoma), MCRPC (metastatic Castration-resistant Prostate Cancer)
Study of Obeldesivir to Treat Children With Respiratory Syncytial Virus (RSV) Infection
Recruiting
The goal of this clinical study is to check if obeldesivir (ODV; GS-5245) is safe and well-tolerated by children with respiratory syncytial virus (RSV) infection. It will also look at how well ODV helps reduce the time it takes for children to feel better and for their RSV symptoms to improve.
The primary objectives of this study are: a) to evaluate the safety and tolerability of ODV in pediatric participants with RSV infection; b) To evaluate the efficacy of ODV on time to alleviation of targe... Read More
Gender:
ALL
Ages:
5 years and below
Trial Updated:
05/14/2025
Locations: UCLA (Outpatient Clinic), Los Angeles, California
Conditions: RSV Infection
A Phase 2b, Randomized, Double-blind, Active-controlled Study of Single Dose CVXGA Intranasal COVID-19 Vaccine in Adults
Recruiting
The purpose of this trial is to assess the safety and relative efficacy of CVXGA (CVXGA50), a KP.2 containing vaccine, compared to COMIRNATY® (COVID-19 Vaccine, mRNA; 2024-2025 Formula), a currently approved COVID-19 vaccine in the prevention of symptomatic, RT-PCR-confirmed SARS-CoV-2 infection. The trial will enroll up to 10016 healthy participants.
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
05/14/2025
Locations: Velocity Clinical Research, Chula Vista, Chula Vista, California
Conditions: COVID-19
A Study to Evaluate the Adverse Events, Efficacy, and Optimal Dose of Intravenous (IV) ABBV-400 in Combination With IV Fluorouracil, Leucovorin, and Budigalimab in Adult Participants With Locally Advanced Unresectable or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma
Recruiting
Cancer is a condition where cells in a specific part of body grow and reproduce uncontrollably. The purpose of this study is to assess adverse events and change in disease activity when ABBV-400 is given in combination with Fluorouracil, Leucovorin, and a programmed cell death receptor 1 (PD1) inhibitor (Budigalimab) (AFLB) to adult participants to treat locally advanced unresectable or metastatic gastric, gastroesophageal junction, or esophageal adenocarcinoma (mGEA).
ABBV-400 and Budigalimab... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/14/2025
Locations: City of Hope National Medical Center /ID# 268690, Duarte, California
Conditions: Locally Advanced Unresectable or Metastatic Gastric Adenocarcinoma, Gastroesophageal Junction Adenocarcinoma, Esophageal Adenocarcinoma
A Study to Assess the Safety, Tolerability and Pharmacokinetics (PK) of Xanomeline With Trospium Chloride Versus KarXT in Healthy Adult and Elderly Participants of Japanese Ethnicity and to Assess the Effect of Omeprazole on the PK of Xanomeline With Trospium Chloride in Healthy Adult Participants
Recruiting
The purpose of this study is to assess the safety, tolerability, and pharmacokinetics (PK) of multiple doses of KarXT + KarX-EC capsules versus KarXT capsules in healthy adult and elderly participants of Japanese ethnicity and to assess the effect of multiple doses of omeprazole on the exposure of xanomeline and trospium administered as KarXT + KarX-EC capsules in healthy adult participants.
Gender:
ALL
Ages:
Between 19 years and 90 years
Trial Updated:
05/14/2025
Locations: Cenexel ACT (Anaheim Clinical Trials), Anaheim, 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:
05/14/2025
Locations: Artemis Institute for Clinical Research, San Diego, California
Conditions: Moderate to Severe Opioid Use Disorder
1693 - 1704 of 5599
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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