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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.
2629 - 2640 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
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
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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
Birth Control Clinical Research Study
Recruiting
Living with obesity and looking for a birth control option that is right for you? Clinical trials are now enrolling women with a body mass index (BMI) of 30 or more in the area to help study a potential new progestin-only contraceptive patch. Participating in research studies can help advance birth control options. Don’t let financial stress hold you back. All study-related assessments, care, and study patch are available at no cost. You may also be reimbursed for study-related travel.
Conditions:
Obesity
Overweight
Overweight and 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
Optimization of Chrononutrition to Reduce the Risk of Disease in Shift Workers
Recruiting
In this randomized controlled trial, the investigators will assess the health impacts of optimizing the timing of dietary consumption in nurses and nursing assistants who work night shifts, have a habitual eating window of 14 hours or more, and elevated weight. Participants will be randomized to one of three groups: (1) dietary monitoring, (2) dietary monitoring plus 10-hour daytime time-restricted eating (TRE), or (3) TRE with a low-glycemic snack during night shifts. The study includes a 2-wee... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
06/03/2025
Locations: University of California San Diego Altman Clinical and Translational Research Institute, La Jolla, California
Conditions: Night Shift Work, Time Restricted Eating, Overweight, Obesity
Demonstrating the Efficacy of a Spanish-Language Program for Latino Dementia Caregivers
Recruiting
The investigators will test the efficacy of Unidos en el Cuidado® (United in Caring, herein Unidos), a 3-session, culturally-adapted, group psychoeducational and skill-building intervention for 226 Spanish-speaking family caregivers in California.
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
06/03/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Caregiver Burden of People With Dementia
A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection
Recruiting
The primary objective of the study is to determine the relative efficacy of the investigational oral severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) vaccine tablet VXA-CoV2-3.3 compared to a currently recommended vaccine for the prevention of symptomatic Coronavirus Disease 2019 (COVID-19).
In order to represent a more recently circulating SARS-CoV-2 variant, the main study endpoints will now evaluate the VXA-CoV2-3.3 (KP.2 strain) vaccine, and not the VXA-CoV2-3.1 (XBB.1.5 strain)... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: Elligo Health Research (BTC/ClinEdge) - Core Healthcare Group, Cerritos, California
Conditions: SARS-CoV2, COVID-19
Golf Recreational Exercise for Enhanced Survivorship in Prostate Cancer Survivors
Recruiting
This clinical trial evaluates a golf recreational exercise program for enhancing survivorship in underrepresented prostate cancer survivors. Golf is a multimodal recreational activity that requires participants to utilize all muscle groups to perform the golf swing, walk over hilly and uneven terrain, maintain balance during putting and squat-like tasks. Physical activity and exercise are beneficial to physical function, cognitive function, psychosocial health, and overall quality of life during... Read More
Gender:
MALE
Ages:
Between 55 years and 85 years
Trial Updated:
06/03/2025
Locations: Los Angeles General Medical Center, Los Angeles, California
Conditions: Localized Prostate Carcinoma, Locally Advanced Prostate Carcinoma, Stage I Prostate Cancer American Joint Committee on Cancer (AJCC) v8, Stage II Prostate Cancer AJCC v8, Stage III Prostate Cancer AJCC v8
Study of Magnetic Resonance Image and Computed Tomography-Guided Stereotactic Body Radiation Therapy for Abdominopelvic Sarcomas (MARS Trial)
Recruiting
Recent advances in radiation treatment have allowed for higher doses per treatment to be delivered safely. This study plans to use an MRI-guided linear accelerator to deliver the radiation treatment to ensure that the radiation dose is administered to the cancerous tumor, not the vital body organs.
Potential participants with a sarcoma diagnosis will be referred to Radiation Oncology during this study. If the participant is interested in participating in this study, s/he receives radiation trea... Read More
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/03/2025
Locations: UCLA / Jonsson Comprehensive Cancer Center, Los Angeles, California
Conditions: Abdominopelvic Sarcomas
A Phase 2b Study of Zagociguat in Patients With MELAS
Recruiting
PRIZM is a Phase 2b randomized, double-blind, placebo-controlled, 3-treatment, 2-period, crossover study evaluating the efficacy and safety of oral zagociguat 15 and 30 mg vs. placebo when administered daily for 12 weeks in participants with genetically and phenotypically defined MELAS.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
06/03/2025
Locations: UC San Diego - Altman Clinical and Translational Research Institute, La Jolla, California
Conditions: Mitochondrial Encephalopathy, Lactic Acidosis and Stroke-Like Episodes (MELAS Syndrome)
Sapphire 3 CTO Study
Recruiting
A prospective, open label, multi-center, single arm, observational study designed to evaluate the acute safety and device performance of the Sapphire 3 0.85, 1.0 and 1.25mm diameter coronary dilatation catheter in predilatation of Chronic Total Occlusion (CTO) lesions during percutaneous coronary intervention.
One hundred seventy (170) subjects will be enrolled with a target of one hundred fifty-three (153) evaluable subjects by the angiographic core laboratory at up to 15 clinical sites with t... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: Stanford Health Care, Stanford, California
Conditions: Coronary Artery Disease, Coronary Disease, Myocardial Ischemia, Heart Diseases, Arteriosclerosis, Cardiovascular Diseases, Chronic Total Occlusion, Chronic Total Occlusion of Coronary Artery
Wound Irrigation With Saline Versus Hypodilute-chlorhexidine After Cesarean Section (WISHES Study)
Recruiting
This investigator-initiated, open-label, randomized controlled trial will explore the effects of two treatment arms, comparing standard treatment with normal saline against Irrisept, a jet lavage solution containing a low concentration of Chlorhexidine Gluconate (CHG) at 0.05% in 99.95% sterile water for irrigation. The study aims to evaluate the impact on postoperative wound healing in patients who have undergone cesarean delivery.
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: Loma Linda University, Loma Linda, California
Conditions: Cesarean Section Complications, Cesarean Section; Infection
Autologous Bone Marrow Aspirate Treatment for Early-Stage Osteonecrosis
Recruiting
Osteonecrosis of the femoral head (ONFH) is a debilitating musculoskeletal disease that is characterized by localized death of bone cells and associated cellular elements within the subchondral bone. If it progresses, it results in the collapse of the femoral head (ball part of the hip) giving rise to secondary arthritis. This condition is associated with marked pain and loss of function, often necessitating a joint replacement. Due to the relatively young age of onset of ONFH (often in 20s and... Read More
Gender:
ALL
Ages:
Between 18 years and 90 years
Trial Updated:
06/03/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Osteonecrosis of the Femoral Head, Avascular Necrosis of the Femoral Head
A Study to Investigate the Safety, Tolerability, Pharmacokinetics (PK), and Preliminary Anticancer Activity of GSK4524101 Alone or With Niraparib in Participants With Solid Tumors
Recruiting
The primary purpose of this study is to determine the maximum tolerated dose of GSK4524101 monotherapy (MTD) and GSK4524101 in combination with niraparib (MTDc). The study consists of two parts - Part 1 (Dose Escalation) and Part 2 (Dose Expansion).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: GSK Investigational Site, San Francisco, California
Conditions: Neoplasms
A Study of Inlexisertib (DCC-3116) in Combination With Anticancer Therapies in Participants With Advanced Malignancies
Recruiting
This is a Phase 1/2, multicenter, open-label (unless otherwise specified in a combination-specific module) study of inlexisertib in combination with anticancer therapies. Modules within the master protocol are defined according to different combinations of inlexisertib with other anticancer agents.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: University of Southern California - Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: GIST
Aspirin for Postpartum Patients With Preeclampsia
Recruiting
The purpose of this research study is to evaluate the effect of low-dose aspirin on recovery from severe preeclampsia (a high blood pressure disorder of pregnancy) among women who have given birth. We hypothesize that taking aspirin for the first week after giving birth will enhance recovery from preeclampsia by decreasing the levels of a protein called soluble fms-like tyrosine kinase (sFlt-1), which is thought to be a main contributor to the development of preeclampsia, and speeding up return... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: Miller Children's and Women's Hospital, Long Beach/MemorialCare Long Beach, Long Beach, California
Conditions: Preeclampsia Postpartum
2629 - 2640 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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