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California Paid Clinical Trials
A listing of 5616 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1069 - 1080 of 5616
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California is currently home to 5616 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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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
A Trial to Evaluate the Safety and Efficacy of Benfotiamine in Patients With Early Alzheimer's Disease (BenfoTeam)
Recruiting
The purpose of this study is to learn more about the safety, effectiveness and tolerability of the study drug called Benfotiamine which may delay or slow the progression of the symptoms of early Alzheimer's disease.
Gender:
ALL
Ages:
Between 50 years and 89 years
Trial Updated:
07/21/2025
Locations: The Neuron Clinic, Chula Vista, California
Conditions: Alzheimer Disease
A Study of TAR-200 Versus Intravesical Chemotherapy in Participants With Recurrent High-Risk Non-Muscle-Invasive Bladder Cancer (HR-NMIBC) After Bacillus Calmette-Guérin (BCG)
Recruiting
The purpose of this study is to compare disease free survival (DFS) in participants with recurrence of papillary-only high-risk non-muscle-invasive bladder cancer (HR-NMIBC) within 1 year of last dose of Bacillus Calmette-Guérin (BCG) therapy and who refused or are unfit for Radical Cystectomy (RC), receiving TAR-200 versus investigator's choice of single agent intravesical chemotherapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: Genesis Research LLC, Los Alamitos, California
Conditions: Non-Muscle Invasive Bladder Neoplasms
Obsidio™ Conformable Embolic Registry
Recruiting
OCCLUDE is a prospective, post-approval, open-label, single arm, multi-center US registry of patients who undergo embolization with Obsidio™ Conformable Embolic. The purpose of this Registry is to assess effectiveness and safety outcomes of subjects who undergo embolization with Obsidio.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: Ronald Reagan UCLA Medical Center, Los Angeles, California
Conditions: Hypervascular Tumors, Bleeding, Hemorrhage
Pulse Oximeter Accuracy in Healthy Humans During Hypoxia
Recruiting
The aim of this project is to test the accuracy of pulse oximeters during mild, moderate and severe hypoxia. This is done by comparing the reading of the pulse oximeter during brief, steady state hypoxia with a gold-standard measurement of blood oxygen. This study will be done on healthy male or females between the age group of 18-50.
Gender:
ALL
Ages:
Between 18 years and 50 years
Trial Updated:
07/21/2025
Locations: Hypoxia Lab, UCSF Department of Anesthesia and Perioperative Care, San Francisco, California
Conditions: Hypoxia, Skin Pigmentation
IRI-EXPLORE: A Study to Test Whether BI 765845 Helps People Who Have Had a Heart Attack
Recruiting
This study is open to adults aged 18 and over who have just had a heart attack. The purpose of this study is to find out whether a medicine called BI 765845 helps people who have had a heart attack. The investigators also want to test how well different doses of BI 765845 work and how they are tolerated by people who have had a heart attack.
Participants are randomly assigned to receive either BI 765845 or placebo. Placebo treatments look like BI 765845 treatments but do not contain any medicin... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: Flourish Research - Los Angeles (Covina) Clinical Research, Covina, California
Conditions: Myocardial Infarction
Study of Lenacapavir and Emtricitabine/Tenofovir Disoproxil Fumarate (F/TDF) for Prevention of HIV in People Who Inject Drugs (HPTN 103)
Recruiting
The goals of this clinical study are to look at how lenacapavir (LEN) passes through the body and to assess the safety of LEN and emtricitabine/tenofovir disoproxil fumarate (F/TDF) for pre-exposure prophylaxis (PrEP) in people who inject drugs (PWID) in the United States (US).
The primary objectives of this study are to characterize the pharmacokinetics (PK) of LEN and to evaluate the safety of LEN and F/TDF for PrEP in US PWID.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: UCLA Vine Street Clinic, Los Angeles, California
Conditions: Pre-Exposure Prophylaxis of HIV Infection
A Study of the Efficacy and Safety of Adjuvant Autogene Cevumeran Plus Atezolizumab and mFOLFIRINOX Versus mFOLFIRINOX Alone in Participants With Resected PDAC
Recruiting
The purpose of this study is to evaluate the efficacy and safety of adjuvant autogene cevumeran plus atezolizumab and modified leucovorin, 5-fluorouracil (5-FU), irinotecan, and oxaliplatin (mFOLFIRINOX) versus mFOLFIRINOX alone in participants with resected pancreatic ductal adenocarcinoma (PDAC) who have not received prior systemic anti-cancer treatment for PDAC and have no evidence of disease after surgery.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: USC Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Adenocarcinoma, Pancreatic Ductal
A Study to Evaluate the Efficacy and Safety of Deucravacitinib in Adults With Active Sjögren's Syndrome
Recruiting
The purpose of this study is to assess the safety and efficacy of two doses of Deucravacitinib in adult participants with Active Sjögren's Syndrome.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/21/2025
Locations: Local Institution - 0228, Fullerton, California
Conditions: Sjögren's Syndrome
Study of ALTO-300 in MDD
Recruiting
The purpose of this study is to determine efficacy differences between ALTO-300 and placebo, used adjunctively to an antidepressant, related to patient characteristics.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/21/2025
Locations: Site 218, Bellflower, California
Conditions: Major Depressive Disorder
A Study to Assess the Efficacy and Safety of Daily OM-85 in Young Children With Recurrent Wheezing
Recruiting
This study will assess the efficacy and safety of daily OM-85 treatment compared to placebo in children aged 6 months to 5 years with recurrent wheezing
Gender:
ALL
Ages:
Between 6 months and 72 months
Trial Updated:
07/21/2025
Locations: Kern Research Inc., Bakersfield, California
Conditions: Recurrent Wheezing, Wheezing Lower Respiratory Illness
A Study in Participants With Major Depressive Disorder (MDD) With Anhedonia and Inadequate Response to Current Antidepressant Therapy Including a Selective Serotonin Reuptake Inhibitor (SSRI) or Serotonin Norepinephrine Reuptake Inhibitor (SNRI)
Recruiting
The purpose of this study is to assess the socio-demographic, disease-related and treatment-related characteristics, and the standard of care (SOC) treatment patterns of participants with major depressive disorder (MDD) with anhedonia with inadequate response to their current antidepressant treatments and treated according to the standard of care treatment.
Gender:
ALL
Ages:
Between 18 years and 74 years
Trial Updated:
07/21/2025
Locations: ATP Clinical Research, California City, California
Conditions: Depressive Disorder, Major
A-LiNK: Improving Outcomes in Autoimmune Liver Disease
Recruiting
The Autoimmune Liver disease Network for Kids (A-LiNK) is a multi-institutional group with the mission to deliver the best care to kids with pediatric autoimmune liver disease (AILD).
This study will establish a shared clinical registry and a learning health network for the participating sites focusing on collecting and transmitting clinical measurement data, information about processes, and participation in an improvement collaborative.
Pediatric Autoimmune Hepatitis (AIH) and Primary Scleros... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/21/2025
Locations: Stanford University, Palo Alto, California
Conditions: Autoimmune Hepatitis, Primary Sclerosing Cholangitis
1069 - 1080 of 5616
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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