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California Paid Clinical Trials
A listing of 5615 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1177 - 1188 of 5615
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California is currently home to 5615 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
Depressive disorder Clinical Study
Recruiting
A clinical study for people that suffer with Depressive disorder
Conditions:
Depressive disorder
Mirikizumab and Tirzepatide Administered in Adult Participants With Moderately to Severely Active Crohn's Disease and Obesity or Overweight
Recruiting
The main purpose of this study is to evaluate the efficacy and safety of mirikizumab and placebo compared with mirikizumab and concomitantly administered tirzepatide in adult participants with moderately to severely active CD and obesity, or overweight.
The maximum duration of this study is up to 61 weeks.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Smart Cures Clinical Research, Anaheim, California
Conditions: Crohn's Disease, Obesity or Overweight
Mirikizumab Administered at the Same Time as Tirzepatide in Adult Participants With Moderately to Severely Active Ulcerative Colitis and Obesity or Overweight: Phase 3b Study
Recruiting
The main purpose of this study is to show whether in these individuals, treatment with both mirikizumab and tirzepatide, compared with treatment with mirikizumab and placebo, leads to decrease or disappearance of UC symptoms, and loss of at least one-tenth of the overall body weight.
Participation in this study will last up to 61 weeks, including 52 weeks of treatment.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Smart Cures Clinical Research, Anaheim, California
Conditions: Ulcerative Colitis, Obesity or Overweight
A Trial of the Efficacy and Safety of SEP-363856 in Acutely Psychotic Participants With Schizophrenia
Recruiting
This is a Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Trial to Determine the the Efficacy and Safety of SEP-363856 in Acutely Psychotic Participants with Schizophrenia
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/22/2025
Locations: Clinical Innovations, Inc. dba CITrials (Bellflower) Site #131, Bellflower, California
Conditions: Schizophrenia
Study of Olomorasib (LY3537982) in Combination With Standard of Care in Participants With Resected or Unresectable KRAS G12C-mutant Non-Small Cell Lung Cancer
Recruiting
The main purpose of this study is to assess if olomorasib in combination with pembrolizumab is more effective than the pembrolizumab and placebo combination in part A in participants with resected KRAS G12C-mutant NSCLC and to assess if olomorasib in combination with durvalumab is more effective than the durvalumab and placebo combination in part B in participants with unresectable KRAS G12C-mutant non-small cell lung cancer. The study may last up to 3 years for each participant.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: UCLA Hematology/Oncology - Santa Monica, Los Angeles, California
Conditions: Carcinoma, Non-Small-Cell Lung
Evaluation of Delefilcon A Contact Lenses
Recruiting
The purpose of the study is to evaluate the lens fit characteristics of delefilcon A contact lenses with different base curves and diameters.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: Kurata Eyecare Center, Los Angeles, California
Conditions: Refractive Errors, Myopia
A Study to Investigate the Efficacy and Safety of Tezepelumab in Adult Participants With Moderate to Very Severe COPD
Recruiting
A Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel Group, Phase 3 Study to Evaluate the Efficacy and Safety of Tezepelumab in Adults with Moderate to Very Severe Chronic Obstructive Pulmonary Disease (COPD)
Gender:
ALL
Ages:
Between 40 years and 80 years
Trial Updated:
07/22/2025
Locations: Research Site, Newport Beach, California
Conditions: Chronic Obstructive Pulmonary Disease (COPD)
A Study of TAK-360 in Adults With Idiopathic Hypersomnia
Recruiting
Idiopathic Hypersomnia (IH) is a condition where people feel extremely sleepy during the day, especially in the morning, even if they sleep a lot at night. They may have trouble waking up in the morning, no matter how much they sleep (sometimes more than 11 hours per day), and they can't help feeling tired, even after taking daytime naps. Because of this sleepiness, they may have trouble focusing, thinking clearly, or keeping up with daily activities. They may also have symptoms like dizziness o... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Takeda Site 11, Redwood City, California
Conditions: Idiopathic Hypersomnia
A Study of Oral Atogepant Tablets to Assess Adverse Events and Change in Disease Activity To Prevent Migraine in Participants Aged 12 to 17 Years
Recruiting
Migraine is a disease that most often causes moderate to severe headache on one side of the head. A migraine attack is a headache that may be accompanied by throbbing, nausea, vomiting, sensitivity to light and sound, or other symptoms. The goals of the study are to evaluate adverse events and how well treatment of atogepant works compared to placebo (looks like the study treatment but contains no medicine) in preventing chronic migraine in participants between 12 and 17 years of age.
Atogepant... Read More
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
07/22/2025
Locations: Advanced Research Center /ID# 270257, Anaheim, California
Conditions: Chronic Migraine
A Phase 3 Trial of MM120 for Generalized Anxiety Disorder (Panorama)
Recruiting
A Phase 3, Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating MM120 Compared to Placebo in Generalized Anxiety Disorder - Panorama
Gender:
ALL
Ages:
Between 18 years and 74 years
Trial Updated:
07/22/2025
Locations: Psychedelic Science Institute, Los Angeles, California
Conditions: Generalized Anxiety Disorder
A Prospective Cohort Study to Assess Clinical Effectiveness of an Investigational Digital Therapeutic (CT-155) in Patients With Experiential Negative Symptoms of Schizophrenia
Recruiting
This study is open to people aged 18 years or older with schizophrenia. People can join the study if they are willing to use a smartphone app called CT-155. This app is being developed to help people with schizophrenia manage their negative symptoms.
The purpose of this study is to gather new information on CT-155. Researchers want to see how well it works, how well participants use the study app, and how it affects the use of health care services.
Participants use the app for 16 weeks. They m... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: Sun Valley Behavioral Med Center, Imperial, California
Conditions: Schizophrenia
A Phase 1, First-in-human Study of OKN4395 and Pembrolizumab in Patients With Solid Tumors
Recruiting
The purpose of this study is to investigate the study drug, OKN4395, administered alone and in combination with pembrolizumab.
The overall objectives of this study are to determine the safety and tolerability (degree to which side effects of a drug can be tolerated) of OKN4395 alone and in combination with pembrolizumab, OKN4395 and metabolites (broken-down substances) of OKN4395 levels in the blood, and antitumor activity of OKN4395 alone and in combination with pembrolizumab.
This study will... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/22/2025
Locations: Precision NextGen Oncology and Research Center, Beverly Hills, California
Conditions: Solid Tumours, Sarcoma, HNSCC, Non Small Cell Lung Cancer, Head and Neck Squamous Cell Carcinoma, NSCLC, Pancreatic Adenocarcinoma, Colorectal Cancer (CRC), Myxofibrosarcoma (MFS), Solitary Fibrous Tumors, Dedifferentiated Liposarcoma, Undifferentiated Pleomorphic Sarcoma (UPS)
An Ophthalmic Safety Study in Patients With Breast Cancer
Recruiting
To assess ophthalmic health in parallel cohorts of patients with breast cancer
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/22/2025
Locations: Research Site, La Jolla, California
Conditions: Ophthalmic Safety in Patients With Breast Cancer
1177 - 1188 of 5615
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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