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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.
1237 - 1248 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
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Conditions:
Healthy
Healthy Volunteer Study
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
Find the Best GLP-1 Weight Loss Providers (2025)
Recruiting
Cutting-edge GLP-1 treatments like semaglutide and tirzepatide are helping thousands lose weight with medically guided support. But with so many online providers, how do you know which programs are trusted, affordable, and right for you?
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
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
A Study to Assess IPN01194 When Administered Alone in Adults With Advanced Solid Tumours
Recruiting
The purpose of this study is to determine the appropriate dosage, safety and effectiveness of the study drug, IPN01194 in adults with advanced solid tumours.
The participants in this study will have advanced solid tumours. 'Advanced solid tumours' refers to cancers that can occur in several places, including cancers in organs or tissues that have spread from their original site to nearby tissues or other parts of the body.
In this study, all participants will receive the study drug, which will... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: The Angeles Clinic and Research Institute - California, Los Angeles, California
Conditions: Melanoma, Head and Neck Squamous Cell Carcinoma, Pancreatic Ductal Adenocarcinoma, Colorectal Cancer, Solid Tumor
Enhancing Transdiagnostic Mechanisms of Cognitive Dyscontrol (R33)
Recruiting
The proposed project aims to test the cognitive and neural effects of a cognitive training in a sample of individuals seeking treatment for anxiety, depression, or traumatic stress symptoms. Participants will be randomly assigned to one of two groups. Group 1 will receive a computer-based program that is designed as a cognitive training intervention and Group 2 will receive a similar computer-based exercise that researchers think will be less effective in training thinking skills (also known as... Read More
Gender:
ALL
Ages:
Between 21 years and 55 years
Trial Updated:
07/31/2025
Locations: UC San Diego, San Diego, California
Integrating Nonpharmacologic Strategies for Pain With Inclusion, Respect, and Equity
Recruiting
INSPIRE creates a trilingual mobile app and telehealth coaching program to promote non-pharmacologic strategies for pain management with Black, Chinese, and Latinx communities in the San Francisco Bay Area. Years 1-2 will develop the app and test it with a brief single arm pilot starting in Nov 2023. A full two arm randomized controlled trial (RCT) will being in early 2025 with changes in PEG scores as the primary outcome. Secondary outcomes include Helping to End Addiction Longterm (HEAL) commo... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: San Francisco General Hospital, San Francisco, California
Conditions: Chronic Pain
Cabozantinib With Ifosfamide in Ewing's Sarcoma and Osteosarcoma
Recruiting
The purpose of this study is to better understand how safe and effective the drug cabozantinib in combination with high-dose ifosfamide is in the treatment of children and adults with relapsed/refractory Ewing sarcoma and osteosarcoma.
Gender:
ALL
Ages:
Between 5 years and 40 years
Trial Updated:
07/31/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Ewing Sarcoma, Osteosarcoma
Cord Clamping Among Neonates With Congenital Heart Disease
Recruiting
The goal of this clinical trial is to compare 2 different timepoints for clamping the umbilical cord at birth for term-born infants with a prenatal diagnosis of congenital heart disease (CHD). The main questions it aims to answer are:
* Does Delayed Cord Clamping at 120 seconds (DCC-120) or Delayed Cord Clamping at 30 seconds (DCC-30) after birth lead to better health outcomes?
* Does DCC-120 seconds or DCC-30 seconds after birth lead to better neuromotor outcomes at 22-26 months of infant age... Read More
Gender:
ALL
Ages:
Between 37 weeks and 42 weeks
Trial Updated:
07/31/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Congenital Heart Disease (CHD)
A Study of AZD3470, a PRMT5 Inhibitor, in Patients With MTAP Deficient Advanced/Metastatic Solid Tumors
Recruiting
This is a first time in human (FTiH) Phase I/IIa, open-label, multi-centre study of AZD3470 in participants with advanced or metastatic solid tumors with MTAP deficiency. The study consists of several study modules, evaluating the safety, tolerability, pharmacokinetic (PK), pharmacodynamics, and preliminary efficacy of AZD3470 as monotherapy or in combination with other anti-cancer agents.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: Research Site, San Francisco, California
Conditions: Advanced Solid Tumors That Are MTAP Deficient
Study of REM-422 in Patients With Recurrent or Metastatic Adenoid Cystic Carcinoma
Recruiting
The goal of this study is to determine the safety and antitumor effects of REM-422, a MYB mRNA degrader, in people with advanced Adenoid Cystic Carcinoma (ACC)
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: University of California San Francisco Helen Diller Comprehensive Cancer Center, San Francisco, California
Conditions: Adenoid Cystic Carcinoma, Metastatic Adenoid Cystic Carcinoma, Recurrent Adenoid Cystic Carcinoma
Study Evaluating INS018_055 Administered Orally to Subjects With Idiopathic Pulmonary Fibrosis
Recruiting
The goal of this clinical trial is to learn about INS018_055 in adults with Idiopathic Pulmonary Fibrosis (IPF).
The primary objective is to evaluate the safety and tolerability of INS018_055 orally administered for up to 12 weeks in adult subjects with IPF compared to placebo.
Gender:
ALL
Ages:
40 years and above
Trial Updated:
07/31/2025
Locations: Keck School of Medicine of USC, Los Angeles, California
Conditions: Idiopathic Pulmonary Fibrosis (IPF)
Long-term, Open-label Study of SAR447537 (INBRX-101) in Adults With Alpha-1 Antitrypsin Deficiency Emphysema
Recruiting
Phase 2 open label extension study to evaluate SAR447537 (INBRX-101) in adults with AATD emphysema
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/31/2025
Locations: David Geffen School of Medicine at UCLA- Site Number : 124, Los Angeles, California
Conditions: Alpha 1-Antitrypsin Deficiency, Emphysema
Study to Evaluate Safety, Efficacy and Pharmacokinetics (PK) of a Modified Regimen of Ublituximab
Recruiting
The primary purpose of this phase 3b study is to assess the efficacy of a modified regimen of ublituximab as measured by T1 Gadolinium (Gd)-enhancing lesions and pharmacokinetics in participants with Relapsing Multiple Sclerosis (RMS). The study consists of 2 parts: Part A is single-armed and open-label and Part B is randomized, double-blind, placebo-controlled.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/31/2025
Locations: TG Therapeutics Investigational Trial Site, Orange, California
Conditions: Relapsing Multiple Sclerosis
A Phase 3B Study to Evaluate Bone Mineral Density With Long-Term Use of Relugolix Combination Tablet in Women With Uterine Fibroids or Endometriosis
Recruiting
The purpose of this clinical trial to characterize changes in bone mineral density during continuous treatment with relugolix combination tablet for up to 48 months (4 years) and 1 year of post-treatment follow-up in premenopausal women with heavy menstrual bleeding associated with uterine leiomyomas (fibroids) or with moderate-to-severe pain associated with endometriosis.
Gender:
FEMALE
Ages:
Between 18 years and 50 years
Trial Updated:
07/31/2025
Locations: Burbank, Burbank, California
Conditions: Uterine Fibroids, Endometriosis
Study of JANX008 in Subjects With Advanced or Metastatic Solid Tumor Malignancies
Recruiting
This study is a first-in-human (FIH), Phase 1/1b, open-label, multicenter dose escalation and dose expansion study to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary anti-tumor activity of JANX008 in adult subjects with advanced or metastatic carcinoma expressing EGFR.
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
07/31/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Non-Small Cell Lung Cancer, Renal Cell Carcinoma, Squamous Cell Carcinoma of the Head and Neck, Colorectal Carcinoma, Small Cell Lung Cancer, Pancreatic Ductal Adenocarcinoma, Triple-negative Breast Cancer
1237 - 1248 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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