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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.
1693 - 1704 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
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Featured Trial
Chronic Cough Research Study
Recruiting
Are you tired of living with chronic cough? Our research study is now looking to enroll people from all backgrounds to help research potential new treatment options for chronic cough.
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
Conditions:
Chronic Cough
Refractory or Unexplained Chronic Cough
Cough
Asthma
Sinusitis
Featured Offer
Lose Weight with GLP-1 Medications
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to semaglutide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
As a valued user, you’re eligible for $100 off your first program with code policy-lab-100.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
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
Featured Trial
Stroke Clinical Study
Recruiting
A clinical study for people that suffer with Stroke
Conditions:
Stroke
Featured Trial
Chronic Kidney Disease (CKD) Clinical Study
Recruiting
A clinical study for people that suffer with Chronic Kidney Disease (CKD)
Conditions:
Chronic Kidney Disease (CKD)
Ivermectin in Combination With Balstilimab or Pembrolizumab in Patients With Metastatic Triple Negative Breast Cancer
Recruiting
This phase II trial studies the side effects and best dose of ivermectin in combination with balstilimab or pembrolizumab and to see how well they they work in shrinking tumors in patients with triple negative breast cancer that has spread to other places in the body (metastatic). Immunotherapy with monoclonal antibodies, such as balstilimab or pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Ivermectin may... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Triple-Negative Breast Carcinoma
Evaluating a Dropless Postoperative Regimen After Cataract Surgery in a Vulnerable, County-hospital Population
Recruiting
The current postoperative cataract surgery eye drop regimen used at Zuckerberg San Francisco General Hospital (ZSFG) is a significant burden for its patient population, contributing to high rates of non-adherence and the development of postoperative complications. The investigators propose to replace this complex regimen with a single administration of intraocular antibiotic and subconjunctival steroid at the time of surgery. This pilot study will obtain the preliminary data required to eventual... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Zuckerberg San Francisco General Hospital and Trauma Center (ZSFG), San Francisco, California
Conditions: Cataract, Surgery, Compliance, Patient, Compliance, Medication, Satisfaction, Patient
A Study of Zilovertamab Vedotin (MK-2140) in Combination With Standard of Care in Participants With Relapsed or Refractory Diffuse Large B-Cell Lymphoma (rrDLBCL) (MK-2140-003)
Recruiting
The purpose of this Phase 2/3, randomized, multisite, open-label, dose confirmation, and expansion study is to evaluate the safety, and efficacy of zilovertamab vedotin (ZV) in combination with standard of care options for the treatment of rrDLBCL. This study will be divided into 2 parts: Dose Confirmation (Part 1) and Efficacy Expansion (Part 2) and will enroll participants who are at least 18 years of age with rrDLBCL. The hypotheses are: ZV in combination with rituximab, gemcitabine, and oxal... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Bass Medical Group ( Site 0166), Walnut Creek, California
Conditions: DLBCL, Diffuse Large B-Cell Lymphoma
NP-G2-044 as Monotherapy and Combination Therapy in Patients With Advanced or Metastatic Solid Tumor Malignancies
Recruiting
Multicenter, open-label study in patients with advanced or metastatic solid tumor malignancies to evaluate the safety, tolerability, and preliminary anti-tumor efficacy, PK, and pharmacodynamics of continuously dosed NP-G2-044 monotherapy and NP-G2-044 in combination with anti-PD-1 therapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: City of Hope, Duarte, California
Conditions: Advanced or Metastatic Solid Tumor Malignancies
Efficacy and Safety of Nemtabrutinib (MK-1026) in Participants With Hematologic Malignancies (MK-1026-003)
Recruiting
The purpose of this study is to evaluate the safety and efficacy of nemtabrutinib (formerly ARQ 531) in participants with hematologic malignancies of chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL), Richter's transformation, marginal zone lymphoma (MZL), mantle cell lymphoma (MCL), follicular lymphoma (FL), and Waldenström's macroglobulinemia (WM).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: University of California San Diego Moores Cancer Center ( Site 2717), La Jolla, California
Conditions: Hematologic Malignancies, Waldenstroms Macroglobulinaemia, Non-Hodgkins Lymphoma, Chronic Lymphocytic Leukaemia
Long-Chain Fatty Acid Oxidation Disorders In-Clinic Disease Monitoring Program
Recruiting
The primary objective of this study is to assess the long-term safety, including pregnancy, infant, and lactation outcomes, of patients with LC-FAOD who are enrolled in the DMP.
Gender:
ALL
Ages:
All
Trial Updated:
07/18/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Long-chain Fatty Acid Oxidation Disorders (LC-FAOD)
Study Of Oral Elagolix Tablets In Combination With Combined Oral Contraceptive Capsules/Tablets To Assess Dysmenorrhea Response In Adult Female Participants With Endometriosis And Associated Moderate To Severe Pain
Recruiting
Endometriosis is a painful disorder of the uterus affecting 6-10% of women of childbearing age. Endometriosis affects daily activities, social relationships, sexuality and sexual activity, and mental health. This study will evaluate how well elagolix in combination with combined oral contraceptives (COC) works within the body and/or how safe it is compared to placebo (does not contain treatment drug). This study will assess the dysmenorrhea (painful periods) response in participants with endomet... Read More
Gender:
FEMALE
Ages:
Between 18 years and 49 years
Trial Updated:
07/18/2025
Locations: Diagnamics Inc. /ID# 225385, Encinitas, California
Conditions: Endometriosis
Safety, Tolerability, and Immunogenicity of mRNA-4157 Alone and in Combination in Participants With Solid Tumors
Recruiting
The purpose of this study is to assess the safety, tolerability, and immunogenicity of mRNA-4157 alone and in combination in participants with solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Angeles Clinic and Research Institute, Los Angeles, California
Conditions: Solid Tumors
Analysis of Headache Chronification With Imaging, Deep Phenotyping, and Proteomics
Recruiting
Study is aimed at determining why some patients with episodic headache proceed to chronic daily or near daily headaches. The Investigators seek to discover differences in brain anatomy and function, composition of cerebrospinal fluid, blood products, genetics, and patient phenotypes that might help explain this process.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Stanford University School of Medicine, Stanford, California
Conditions: Chronic Daily Headache, Chronic Migraine
Breast Cancer Screening Adherence for Women at Moderate Risk for Breast Cancer
Recruiting
This study assesses breast cancer screening adherence for women at moderately increased risk for developing breast cancer based on gene mutation status or empiric risk model estimates. It also seeks to determine facilitators and barriers to screening.
Gender:
FEMALE
Ages:
Between 30 years and 75 years
Trial Updated:
07/17/2025
Locations: Los Angeles General Medical Center, Los Angeles, California
Conditions: Breast Carcinoma
A First-in-human Study to Evaluate the Safety and Tolerability of HB-2121 as a Diagnostic for Celiac Disease
Recruiting
The goal of this clinical trial is to learn about the safety of a single dose of HB-2121 in adults. It will also look at how the body processes the drug. The main questions it aims to answer are:
* What side effects do participants have after receiving HB-2121?
* How much HB-2121 is in the blood over time?
Researchers will follow participants for 30 days after receiving HB-2121 to understand how the drug behaves in the body and how safe it is.
Participants will:
* Receive one oral dose of HB... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Stanford University, Stanford, California
Conditions: Celiac Disease, Healthy
EXOMIND (BTL-699-2) for the Improvement of Sleep Quality and Reduction of Stress
Recruiting
The goal of this clinical trial is to evaluate whether the treatment with BTL-699-2 device is able to improve sleep quality and reduce stress in adults above the age of 22 years. The main questions it aims to answer are:
Does the treatment with BTL-699-2 device improve sleep quality? Does the treatment with BTL-699-2 device reduce stress?
Participants will be asked to:
* Undergo six treatments
* Complete the Pittsburgh Sleep Quality Index
* Complete the Perceived Stress Scale Questionnaire
*... Read More
Gender:
ALL
Ages:
22 years and above
Trial Updated:
07/17/2025
Locations: AntiAging and Wellness, Chula Vista, California
Conditions: Sleep Quality, Stress Reduction
1693 - 1704 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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