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California Paid Clinical Trials
A listing of 5622 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
2401 - 2412 of 5622
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California is currently home to 5622 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
Anticoagulation for Stroke Prevention In Patients With Recent Episodes of Perioperative AF After Noncardiac Surgery
Recruiting
Multinational, investigator-initiated study of oral anticoagulation versus no anticoagulation for the prevention of stroke and other adverse cardiovascular events in patients with transient perioperative atrial fibrillation after noncardiac surgery and additional stroke risk factors.
Gender:
ALL
Ages:
55 years and above
Trial Updated:
06/10/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Stroke, Atrial Fibrillation
A Study of NanO2™ Combined With Radiation and Temozolomide in Patients With Newly Diagnosed GBM
Recruiting
This clinical trial is testing the safety and efficacy of NanO2TM administered via intravenous infusion in combination with standard radiation and chemotherapy.
NanO2TM is being developed to increase the amount of oxygen delivered to tumors which is hoped to increase the effectiveness of radiation therapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/10/2025
Locations: UC Irvine Health- Chao Family Comprehensive Cancer Center, Orange, California
Conditions: Glioblastoma Multiforme
ECoG BMI for Motor and Speech Control
Recruiting
Test the feasibility of using electrocorticography (ECoG) signals to control complex devices for motor and speech control in adults severely affected by neurological disorders.
Gender:
ALL
Ages:
21 years and above
Trial Updated:
06/10/2025
Locations: University of California San Francisco, San Francisco, California
Stereotactic Radiosurgery Compared With Hippocampal-Avoidant Whole Brain Radiotherapy (HA-WBRT) Plus Memantine for 5 or More Brain Metastases
Recruiting
Stereotactic radiosurgery (SRS) is a commonly used treatment for brain tumors. It is a one-day (or in some cases two day), out-patient procedure during which a high dose of radiation is delivered to small spots in the brain while excluding the surrounding normal brain.
Whole brain radiation therapy with hippocampal avoidance (HA-WBRT) is when radiation therapy is given to the whole brain, while trying to decrease the amount of radiation that is delivered to the area of the hippocampus. The hipp... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/10/2025
Locations: City of Hope Corona, Corona, California
Conditions: Brain Metastases
Regional Radiotherapy in Biomarker Low-Risk Node Positive and T3N0 Breast Cancer
Recruiting
The purpose of this study is to compare the effects on low risk breast cancer receiving usual care that includes regional radiation therapy, with receiving no regional radiation therapy. Researchers want to see if not giving this type of radiation treatment works as well at preventing breast cancer from coming back.
Gender:
FEMALE
Ages:
35 years and above
Trial Updated:
06/10/2025
Locations: Kaiser Permanente-Anaheim, Anaheim, California
Conditions: Breast Cancer
ColoCare Study - Colorectal Cancer Cohort
Recruiting
ColoCare is an international prospective cohort study of stage I-IV colorectal cancer patients (ICD-10 C18-C20).
Gender:
ALL
Ages:
Between 18 years and 89 years
Trial Updated:
06/10/2025
Locations: Cedars-Sinai Medical Center, Los Angeles, California
Conditions: Colorectal Cancer
A Study to Evaluate the Safety of a Delivery Device for Administering LCTOPC1 in Participants With Spinal Cord Injury
Recruiting
The DOSED clinical study evaluates the safety and utility of a novel delivery device to deliver LCTOPC1, a cell therapy, to the spinal cord of patients with a spinal cord injury (SCI). LCTOPC1 is designed to replace or support cells that are absent or dysfunctional due to traumatic injury, with a goal to help improve the quality of life and restore or augment functional activity in persons suffering from a traumatic cervical or thoracic injuries.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
06/09/2025
Locations: University of California, San Diego, La Jolla, California
Conditions: Spinal Cord Injury Cervical, Spinal Cord Injury Thoracic, Spinal Cord Injury, Acute, Spinal Cord Injury, Spinal Cord Injury, Chronic
To Investigate the Efficacy of Treatment With Oral NA-921 (Bionetide) Versus Placebo in Females With Rett Syndrome
Recruiting
Primary Objective • To investigate the efficacy of treatment with oral Bionetide versus placebo in girls and women with Rett syndrome
Key Secondary Objective
• To investigate the efficacy of treatment with oral Bionetide versus placebo on ability to communicate in girls and women with Rett syndrome
Gender:
FEMALE
Ages:
Between 5 years and 20 years
Trial Updated:
06/09/2025
Locations: Biomed Testing Facility # BIO-05-92093, La Jolla, California
Conditions: Rett Syndrome
A Proof-of-Concept Study to Assess the Efficacy, Safety and Tolerability of Itepekimab (Anti--IL-33 mAb) in Participants With Chronic Rhinosinusitis Without Nasal Polyps
Recruiting
ACT18421 is a multinational, randomized, double-blind, placebo-controlled, parallel-group, Phase 2 study with 3 treatment groups. The purpose of the study is to evaluate the efficacy, safety and tolerability of 2 dosing regimens of itepekimab compared to placebo in male and female participants with chronic rhinosinusitis without nasal polyps (CRSsNP) aged 18 years of age and older.
Study details include:
* The study duration (4-week screening, 24--week intervention, 20--week safety followup) w... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/09/2025
Locations: Modena Allergy + Asthma- Site Number : 8400005, La Jolla, California
Conditions: Chronic Rhinosinusitis Without Nasal Polyps
Dichoptic Treatment for Amblyopia in Children 8 to 12 Years of Age
Recruiting
Participants eligible for the study will be randomly allocated (1:1:1) to receive either Luminopia dichoptic treatment while wearing optical correction if needed, Vivid Vision dichoptic treatment while wearing optical correction if needed, or continued optical correction alone if needed, with clinical assessments at 9- and 18-weeks post-randomization.
At the 18-week primary outcome visit, participants who were randomly assigned to receive optical correction alone if needed with an IOD of 1 logM... Read More
Gender:
ALL
Ages:
Between 8 years and 12 years
Trial Updated:
06/09/2025
Locations: University Eye Center at Ketchum Health, Anaheim, California
Conditions: Amblyopia
An Investigational Scan (89Zr-DFO-GmAb PET/CT) Compared to Contrast-Enhanced CT for the Detection of Recurrent Clear Cell Renal Cell Cancer After Surgery Comparing Carbonic Anhydrase IX (CAIX) PET CT to Conventional PET CT for Post-Op Staging in Kidney Cancer
Recruiting
This phase II trial compares the safety and effectiveness of 89Zr-DFO-GmAb positron emission tomography (PET)/computed tomography (CT) compared to contrast-enhanced CT after surgery in detecting clear cell renal cell cancer that has come back (recurrent). For some patients, the risk of recurrence after surgery remains high. Conventional CT methods, such as contrast-enhanced CT, may not detect small volume or micrometastatic disease. PET/CT with radiotracers, such as 89Zr-DFO-GmAb, may improve de... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/09/2025
Locations: UCLA / Jonsson Comprehensive Cancer Center, Los Angeles, California
Conditions: Clear Cell Renal Cell Carcinoma, Sarcomatoid Renal Cell Carcinoma, Stage II Renal Cell Cancer, Stage III Renal Cell Cancer, Stage IV Renal Cell Cancer
Dichoptic Treatment for Amblyopia in Children 4 to 7 Years of Age
Recruiting
In children 4 to 7 years of age, to determine if treatment with 1 hour per day 6 days per week of watching dichoptic movies/shows wearing the Luminopia headset is non-inferior to treatment with 2 hours of patching per day 7 days per week with respect to change in amblyopic eye distance VA from randomization to 26 weeks.
Gender:
ALL
Ages:
Between 4 years and 7 years
Trial Updated:
06/09/2025
Locations: Univ. of California- Berkeley, Berkeley, California
Conditions: Amblyopia
2401 - 2412 of 5622
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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