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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.
1897 - 1908 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)
RCT for Latina Mental Health Using Web-Based Apps
Recruiting
This study compares a choice-driven, interactive, evidence-informed storytelling web-based app intervention with links to resources and treatment (Tx) recommendations (made by a character via her blog) and Tx locator, to a web-based app with links to publicly available informational internet videos, MH resources, and a treatment locator for at least moderately anxious/depressed untreated English and Spanish speaking Latinas to determine if a story-based, character-driven approach is more effecti... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: UCLA, Los Angeles, California
Green Tea and Quercetin in Combination With Docetaxel Chemotherapy in Castration-resistant Prostate Cancer Patients
Recruiting
The goal of this clinical trial is to find out if taking natural products green tea and quercetin along with docetaxel chemotherapy improves the therapy of advanced prostate cancer, i.e., metastatic castration-resistant prostate cancer (mCRPC). It will also learn about the safety of this combination.
Researchers will compare green tea plus quercetin to a placebo (a look-alike substance that contains no drug) in combination with docetaxel to see if green tea and quercetin works to improve the th... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: Charles R. Drew University of Medicine and Science, Los Angeles, California
Conditions: Metastatic Castration-resistant Prostate Cancer (mCRPC)
QUELIMMUNE (SCD-PED) PediAtric SurVeillance REgistry
Recruiting
QUELIMMUNE is FDA-approved under an HDE for the treatment of pediatric patients (weight ≥10kg and age ≤22 years) with AKI due to sepsis or a septic condition on antibiotic therapy and requiring RRT.
The purpose of this surveillance registry is to prospectively collect safety data among all patients treated with QUELIMMUNE under the HDE. More specifically, we intend on comparing the incidence of new (secondary) blood stream infections in the first 28 days after SCD-PED initiation to a comparator... Read More
Gender:
ALL
Ages:
22 years and below
Trial Updated:
07/12/2025
Locations: Lucile Packard Children's Hospital Stanford, Palo Alto, California
Conditions: Acute Kidney Injury, Acute Kidney Injury Due to Sepsis
Personalized Accelerated ChEmoRadiation (PACER) for Lung Cancer
Recruiting
The purpose of this study is to examine the use of hypofractionated accelerated radiation therapy (HART) to treat locally advanced lung cancer. Depending on the location and size of the tumor.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: Stanford University, Palo Alto, California
Conditions: Lung Cancer
Roadmap to Parenthood: Testing the Efficacy of a Decision Aid and Planning Tool for Family Building After Cancer
Recruiting
This study will test a decision support intervention that consists of a web-based 'decision aid and planning tool' for family building after cancer in a randomized controlled trial.
Gender:
FEMALE
Ages:
Between 18 years and 45 years
Trial Updated:
07/12/2025
Locations: Stanford Universtiy, Palo Alto, California
Conditions: Quality of Life, Parenthood Status
Testing the Combination of the Anti-Cancer Drugs Temozolomide and M1774 to Evaluate Their Safety and Effectiveness
Recruiting
This phase I/II trial studies the side effects and best dose of temozolomide and M1774 and how well they works in treating patients with cancer that has spread from where it first started (primary site) to other places in the body (metastatic) and may have spread to nearby tissue, lymph nodes, or distant parts of the body (advanced). Temozolomide is in a class of medications called alkylating agents. It works by damaging the cell's deoxyribonucleic acid (DNA) and may kill tumor cells and slow do... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: UC San Diego Moores Cancer Center, La Jolla, California
Conditions: Advanced Malignant Solid Neoplasm, Metastatic Malignant Solid Neoplasm, Advanced Microsatellite Stable Colorectal Carcinoma, Metastatic Microsatellite Stable Colorectal Carcinoma, Stage III Colorectal Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Hematopoietic and Lymphatic System Neoplasm
GOLD: Brief Intervention to Reduce Anxiety and Promote Resilience in Families of Youth With Cancer
Recruiting
The purpose of this study is to examine a psychotherapeutic and psycho-educational intervention offered in virtual settings to caregivers of youth with cancer. Human subjects must be used because they are the object of the intervention.
Gender:
ALL
Ages:
Between 8 years and 18 years
Trial Updated:
07/12/2025
Locations: Stanford Cancer Institute, San Francisco, California
Conditions: Cancer
Study to Evaluate Percussive Ventilation Breathhold to Improve Lung Stereotactic Ablative Radiotherapy
Recruiting
The purpose of this research is to evaluate and determine the rate of successful administration of Percussive ventilation breathhold (PVB) to allow for more accurate radiotherapy for lung tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: Stanford Cancer Institute, Palo Alto, California
Conditions: Lung Cancer
Panitumumab-IRDye800 in Diagnosing Participants With Malignant Glioma Undergoing Surgery
Recruiting
The phase I/II trial studies the side effects and best dose of panitumumab-IRDye800 in diagnosing participants with malignant glioma who undergo surgery. Panitumumab-IRDye800 can attach to tumor cells and make them more visible using a special camera during surgery, which may help surgeons better distinguish tumor cells from normal brain tissue and identify small tumors that cannot be seen using current imaging methods.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/12/2025
Locations: Stanford University School of Medicine, Palo Alto, California
Conditions: Malignant Brain Neoplasm, Malignant Glioma
A Study of HBS-201 (Pitolisant Delayed-release)
Recruiting
The purpose of this study is to assess the tolerability of HBS-201 when starting at a therapeutic dose in adult participants with narcolepsy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/11/2025
Locations: Harmony Site 9, San Ramon, California
Conditions: Narcolepsy
A Study of Retatrutide (LY3437943) in Participants Who Have Obesity or Overweight and Chronic Low Back Pain
Recruiting
The main purpose of this study is to evaluate the efficacy and safety of retatrutide in relieving chronic low back pain in participants who have obesity or overweight. Participation in the study will last about 80 weeks.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/11/2025
Locations: Ark Clinical Research - Fountain Valley, Fountain Valley, California
Conditions: Obesity, Overweight, Chronic Low Back Pain (CLBP)
A Randomized, Double Blind, Placebo Controlled, Clinical Study to Examine the Benefits of an Oral Product in Panelists With Menopausal Symptoms Including Vasomotor Symptoms (VMS).
Recruiting
Randomized, Double-Blind, Placebo-Controlled, Single-Center Clinical Study with a Run-in Baseline, Daily Diary Log, and Validated Questionnaires (Greene GCS) with Oral Dietary Supplement
Gender:
FEMALE
Ages:
Between 40 years and 65 years
Trial Updated:
07/11/2025
Locations: San Francisco Research Institute, San Francisco, California
Conditions: Healthy
1897 - 1908 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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