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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.
1969 - 1980 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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Lose 20% of Body Weight With GLP-1's
Recruiting
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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).
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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
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
Featured Trial
Stroke Clinical Study
Recruiting
A clinical study for people that suffer with Stroke
Conditions:
Stroke
Collection of Immunology Specimens From Patients With Cancer or Blood Disorders, and Healthy Volunteers
Recruiting
This research trial collects and stores blood, tissue, and bone marrow specimens from patients with cancer or blood disorders, and healthy volunteers to study the immune system in a variety of different types of experiments, as well as associated clinical data as appropriate, focused on understanding mechanisms of immunotherapy.
Gender:
ALL
Ages:
19 years and above
Trial Updated:
07/10/2025
Locations: USC / Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Healthy Subject, Hematologic and Lymphocytic Disorder, Hematopoietic and Lymphoid Cell Neoplasm, Immune System Disorder, Malignant Neoplasm
Trigger Point Injection in Reducing Pain Following Total Knee Arthroplasty
Recruiting
This study will evaluate the ability of trigger point injections completed immediately following a total knee arthroplasty decrease pain scores and opioid use compared to sham injections. Given the current state of opioid dependency in the United States there needs to be a more focused attempt at treating post-operative pain without use of opioids. Given the manipulation of soft tissue during a total knee arthroplasty there seems to be a high correlation with pain and myofascial pain syndrome. T... Read More
Gender:
ALL
Ages:
45 years and above
Trial Updated:
07/09/2025
Locations: David Grant Medical Center, Fairfield, California
Conditions: Trigger Point Pain, Myofascial
A Phase Ⅲ Study of Rilvegostomig in Combination With Fluoropyrimidine and Trastuzumab Deruxtecan as the First-line Treatment for HER2-positive Gastric Cancer
Recruiting
This is a Phase Ⅲ, randomized, open-label, Sponsor-blinded, 3-arm, global, multicenter study assessing the efficacy and safety of rilvegostomig in combination with fluoropyrimidine and T-DXd (Arm A) compared to trastuzumab, chemotherapy, and pembrolizumab (Arm B) in HER2-positive locally advanced or metastatic gastric or GEJ adenocarcinoma participants whose tumors express PD L1 CPS ≥ 1. Rilvegostomig in combination with trastuzumab and chemotherapy will be evaluated in a separate arm (Arm C) to... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: Research Site, Duarte, California
Conditions: HER2-positive Gastric Cancer, Gastroesophageal Junction Adenocarcinoma
Electrical Stimulation for Vision Neuroenhancement in Glaucoma
Recruiting
The purpose of the study is to evaluate the efficacy, transorbital alternating current stimulation (rtACS) using the EYETRONIC for the treatment in patients with glaucoma.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: Byers Eye Institute at Stanford University, Palo Alto, California
Conditions: Glaucoma, Glaucoma Open-Angle
Study of Natriuretic Peptide Receptor 1 (NPR1) Antagonist in Adult Patients With Postural Orthostatic Tachycardia Syndrome (POTS)
Recruiting
This study is researching an experimental drug called REGN7544 (called "study drug"). The study is focused on participants with POTS.
The aim of the study is to see how safe, tolerable, and effective the study drug is.
The study is looking at several other research questions, including:
* How the study drug changes heart rate and blood pressure in participants with POTS
* What side effects may happen from taking the study drug
* How much study drug is in the blood at different times
* Whether... Read More
Gender:
ALL
Ages:
Between 18 years and 55 years
Trial Updated:
07/09/2025
Locations: North County Neurology Associates, Carlsbad, California
Conditions: Postural Orthostatic Tachycardia Syndrome (POTS)
A Phase III, Randomised Study of Adjuvant Dato-DXd in Combination With Rilvegostomig or Rilvegostomig Monotherapy Versus Standard of Care, Following Complete Tumour Resection, in Participants With Stage I Adenocarcinoma NSCLC Who Are ctDNA-positive or Have High-risk Pathological Features
Recruiting
This is a Phase III, randomised, open-label, multicentre, global study assessing the efficacy and safety of adjuvant Dato-DXd in combination with rilvegostomig compared with SoC, after complete surgical resection (R0) in participants with Stage I adenocarcinoma NSCLC who are ctDNA-positive, as determined by the Sponsor-designated ctDNA assay, or have at least one high-risk pathological feature.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: Research Site, Duarte, California
Conditions: Non-small Cell Lung Cancer
Eganelisib as Monotherapy and in Combination With Cytarabine in Relapsed/Refractory AML
Recruiting
This is a Phase 1b open-label, multicenter, dose-escalation and dose-optimization study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and anti-tumor efficacy of eganelisib as monotherapy and in combination with cytarabine in patients with relapsed/refractory (r/r) acute myeloid leukemia (AML) or r/r higher-risk myelodysplastic syndromes (HR-MDS).
The study consists of 2 parts:
* Part 1: Dose Escalation (DE) in both monotherapy and in combination.... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: City of Hope, Duarte, California
Conditions: AML, Adult, MDS
Comparing the Impact of Four Types of Meditation Practices for Relaxation in Cancer Survivors
Recruiting
This clinical trial compares the impact of four types of meditation practices, breathing only, focused attention only, mindfulness only, and breathing, focused attention and mindfulness combined, for relaxation in cancer survivors. Studies show that many patients with cancer experience stress and anxiety. Meditation therapy uses a variety of techniques, such as breathing, sound, or movement, that may help to decrease distress and anxiety and enhance the health and quality of life of patients wit... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm
Evaluation of the Safety and Effectiveness of the CereVasc® eShunt® System in Normal Pressure Hydrocephalus
Recruiting
Prospective, multi-center, randomized, controlled trial of the eShunt System in the treatment of patients with normal pressure hydrocephalus.
Gender:
ALL
Ages:
60 years and above
Trial Updated:
07/09/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Normal Pressure Hydrocephalus
Open-label Extension Study of Enlicitide Decanoate (MK-0616/Enlicitide Oral PCSK9 Inhibitor) in Adults With Hypercholesterolemia (MK-0616-019) CORALreef Extension
Recruiting
This is an extension study to evaluate the longer-term safety and efficacy of enlicitide decanoate in adults with hypercholesterolemia who completed either study MK-0616-013 (NCT05952856), study MK-0616-017 (NCT05952869), or study MK-0616-018 (NCT06450366).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/09/2025
Locations: National Heart Institute-Research ( Site 0029), Beverly Hills, California
Conditions: Hypercholesterolemia
Open-Label Safety, PK, and Efficacy Trial of Sebetralstat (KVD900) in Pediatric Patients (Ages 2-11) With HAE Type I or II
Recruiting
KVD900-303 is an open-label, multicenter clinical trial in patients aged 2 to 11 years old with HAE Type I or II.
Gender:
ALL
Ages:
Between 2 years and 11 years
Trial Updated:
07/09/2025
Locations: KalVista Investigative Site, San Diego, California
Conditions: Hereditary Angioedema
ICoN-1 Phase 3 Study of the Efficacy and Safety of Treatment With MNKD-101, Clofazimine Inhalation Suspension
Recruiting
This clinical trial is designed to compare the efficacy and safety of Clofazimine Inhalation Suspension versus placebo when added to guideline-based therapy (GBT)
Gender:
ALL
Ages:
Between 18 years and 85 years
Trial Updated:
07/09/2025
Locations: University of California San Francisco Fresno, Fresno, California
Conditions: MAC Lung Disease, Treatment Refractory MAC Lung Disease, Mycobacterium Infections, Nontuberculous
1969 - 1980 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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