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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.
301 - 312 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
Study of Canakinumab in Patients With Myelofibrosis
Recruiting
This is an open label, multicenter, phase 2 trial of Canakinumab in patients with primary myelofibrosis (PMF), post essential thrombocythemia/polycythemia vera related MF (Post ET/PV MF). Eligible patients will receive Canakinumab administered as a subcutaneous injection on day 1 of a 21 day cycle for a core study period of 8 cycles. Canakinumab will be given by subcutaneous injection (SC) injection at a starting dose of 200 mg (one 150 mg/mL syringe and one 50 mg/0.5 mL syringe) every 3 weeks.... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Cedars-Sinai Medical Center, Samuel Oschin Comprehensive Cancer Institute, Los Angeles, California
Conditions: Primary Myelofibrosis, Post-essential Thrombocythemia Myelofibrosis, ET-MF, Post-polycythemia Vera Related Myelofibrosis, PV-MF
Study to Assess the Efficacy and Safety of Atuliflapon in Moderate-to-Severe Uncontrolled Asthma
Recruiting
This is a randomised, placebo-controlled, double-blind study to assess the efficacy and safety of Atuliflapon administered once daily over a 12-week treatment period to adult participants with moderate to severe uncontrolled asthma.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
08/18/2025
Locations: Research Site, Bakersfield, California
Conditions: Asthma
Stellate Ganglion Block for PTSD
Recruiting
Posttraumatic Stress Disorder (PTSD) is a debilitating condition that affects about 15% of Veterans. Current treatments for Veterans with PTSD include medications and psychological therapies that help to process and desensitize to traumatic events. While effective for many, these treatments do not work for all patients, and many may refuse them. Stellate Ganglion Block (SGB), established to treat pain and other conditions, has shown promise for PTSD: early small studies show it may work fast and... Read More
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
08/18/2025
Locations: VA Long Beach Healthcare System, Long Beach, CA, Long Beach, California
Conditions: Post-traumatic Stress Disorder
The CONFORM Pivotal Trial
Recruiting
The CLAAS® device will be evaluated for safety and efficacy by establishing its performance is non-inferior to the commercially available WATCHMAN® and Amulet™ left atrial appendage closure devices in patients with non-valvular atrial fibrillation. Patients who are eligible for the trial will be randomized to receive either the CLAAS device or the WATCHMAN or Amulet™ devices and will be followed for 5 years after device implant.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Pacific Heart Institute, Santa Monica, California
Conditions: Atrial Fibrillation, Stroke
ORACLE: Observation of ResiduAl Cancer With Liquid Biopsy Evaluation
Recruiting
The purpose of ORACLE is to demonstrate the ability of a novel ctDNA assay developed by Guardant Health to detect recurrence in individuals treated for early-stage solid tumors. It is necessary that ctDNA test results are linked to clinical outcomes in order to demonstrate clinical validity for recurrence detection and explore its value in a healthcare environment subject to cost containment.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: University of California, San Diego, La Jolla, California
Conditions: Bladder Carcinoma, Ureter Carcinoma, Renal Pelvis Carcinoma, Non-small Cell Lung Cancer, Invasive Breast Carcinoma, Cutaneous Melanoma, Esophageal Carcinoma, Gastroesophageal Junction Carcinoma, Gastric Adenocarcinoma, Pancreatic Adenocarcinoma, Squamous Cell Carcinoma of the Head and Neck, Epithelial Ovarian Carcinoma, Fallopian Tube Carcinoma, Endometrial Carcinoma, Renal Cell Carcinoma, Rectal Adenocarcinoma
Outpatient Treatment With Anti-Coronavirus Immunoglobulin
Recruiting
The primary objective of the Outpatient Treatment with Anti-Coronavirus Immunoglobulin (OTAC) (INSIGHT 012) trial is to compare the safety and efficacy of a single infusion of anti-COVID-19 hyperimmune intravenous immunoglobulin (hIVIG) versus placebo among adults with recently diagnosed severe acute respiratory syndrome - coronavirus 2 (SARS-CoV2) infection who do not require hospitalization. The primary endpoint of this double-blind randomized trial is a five-category ordinal outcome that asse... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: VA Northern California Health Care System (074-023), Mather, California
Conditions: COVID, SARS-CoV2 Infection, Covid19
A Study of JNJ-69086420, an Actinium-225-Labeled Antibody Targeting Human Kallikrein-2 (hK2) for Advanced Prostate Cancer
Recruiting
The purpose of this study is to determine the recommended Phase 2 dose(s) (RP2D\[s\]) of JNJ-69086420 in Part 1 (Dose Escalation), to determine safety and preliminary signs of clinical activity at the RP2D(s) in Part 2 (Dose Expansion), to determine safety of JNJ-69086420 at the RP2D(s) as a combination therapy in Part 3 (combination therapy) and to determine safety of JNJ-69086420 at the RP2D(s) in participants with metastatic hormone-sensitive prostate cancer (mHSPC) in Part 4.
Gender:
MALE
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: City of Hope, Duarte, California
Conditions: Prostatic Neoplasms, Adenocarcinoma
A Study Comparing Imetelstat Versus Best Available Therapy for the Treatment of Intermediate-2 or High-risk Myelofibrosis (MF) Who Have Not Responded to Janus Kinase (JAK)-Inhibitor Treatment
Recruiting
The purpose of the study is to evaluate the overall survival of participants treated with imetelstat compared to best available therapy with intermediate-2 or high-risk Myelofibrosis (MF) who are relapsed/refractory (R/R) to Janus Kinase (JAK)-Inhibitor treatment.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: University of California-San Diego/Moores UCSD Cancer Center, La Jolla, California
Conditions: Myelofibrosis
Gemcitabine, Nab-Paclitaxel, and Bosentan for the Treatment of Unresectable Pancreatic Cancer
Recruiting
This phase I trial studies the side effects and best dose of bosentan and how well it works when given together with gemcitabine and nab-paclitaxel for the treatment of pancreatic cancer that cannot be removed by surgery (unresectable). Bosentan may block the hormone endothelin and prevent the growth and spread of pancreatic cancer. Drugs used in chemotherapy, such as gemcitabine and nab-paclitaxel, work in different ways to stop the growth of tumor cells, either by killing the cells, by stoppin... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Stage III Pancreatic Cancer AJCC v8, Stage IV Pancreatic Cancer AJCC v8, Unresectable Pancreatic Carcinoma
Carboplatin or Olaparib for BRcA Deficient Prostate Cancer
Recruiting
This is an unblinded, randomized clinical study comparing the efficacy of DNA damaging chemotherapy using carboplatin, to standard of care therapy for patients who have metastatic castrate resistant prostate cancer. This trial will use olaparib or carboplatin as initial therapy with crossover to the alternate or second-line drug after first progression for patients with tumors containing BARD1, BRCA1, BRCA2, BRIP1, CHEK1, FANCL, PALB2, RAD51B, RAD51C, RAD51D, or RAD54L inactivating mutations.
P... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: VA Greater Los Angeles Healthcare System, West Los Angeles, CA, West Los Angeles, California
Conditions: Metastatic Castrate Resistant Prostate Cancer, BARD1, BRCA1, BRCA2, BRIP1, CHEK1, FANCL, PALB2, RAD51B, RAD51C, RAD51D, or RAD54L Mutations
Confocal Laser Endomicroscopy as an Imaging Biomarker for the Diagnosis of Pancreatic Cystic Lesions
Recruiting
The study schema is shown in Figure 4. (A) All patients referred to one of the participating academic centers for EUS evaluation of the PCL will be enrolled in the protocol if they satisfy inclusion criteria. Patient consent will be obtained during the clinic visit or prior to their EUS. EUS-guided nCLE imaging is first performed (B) followed by EUS-guided FNA and aspiration of cyst fluid. The cyst fluid is analyzed for CEA and cytology. As per institutional standard of care, the cyst fluid is a... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Stanford Hospital, Stanford, California
Conditions: Pancreatic Cyst
Blue Light Cystoscopy With Cysview® Registry
Recruiting
Registry study to gather more information on the current use of Blue Light Cystoscopy with Cysview (BLCC) in urologists' practices.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: USC/Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Bladder Cancer
301 - 312 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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