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Pain Paid Clinical Trials in California
A listing of 139 Pain clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
49 - 60 of 139
The state of California currently has 139 active clinical trials seeking participants for Pain research studies. These trials are conducted in various cities, including Los Angeles, San Francisco, San Diego and Sacramento.
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People who may be candidates for this procedure:
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¹ Kandzari DE, et al. J Am Coll Cardiol. Nov 7, 2023;82(19):1809-1823.
People who may be candidates for this procedure:
• Are at least 18 years old
• Have been unable to manage their high blood pressure with medications or lifestyle changes alone¹
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¹ Kandzari DE, et al. J Am Coll Cardiol. Nov 7, 2023;82(19):1809-1823.
Conditions:
High Blood Pressure
High Blood Pressure (& [Essential Hypertension])
High Blood Pressure (Hypertension).
Hypertension
Essential Hypertension
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.
Conditions:
Healthy
Healthy Volunteer Study
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There's a big difference between the price on a landing page and what you actually pay. We went all the way through checkout so you know exactly what to expect.
📋 5 providers ranked by true monthly cost
💵 Options starting as low as $149/month
🏥 Only licensed providers using FDA-registered pharmacies
⭐ Real Trustpilot scores included — including the ones with mixed reviews
🔒 Includes cancellation policy warnings so you don't get stuck
Conditions:
Weight Loss
Morbid Obesity
Featured Trial
Rheumatoid Arthritis (RA) Clinical Research Study
Recruiting
The Ntrust-2 study is a clinical research study evaluating an investigational cell therapy, called NKX019, in adults living with rheumatoid arthritis (RA).
The Ntrust-2 study
The Ntrust-2 study is part of a broad effort of the global research community to develop more treatment options for people living with rheumatoid arthritis.
What is NKX019?
NKX019 is an investigational cell therapy being studied for rheumatoid arthritis (RA). It is designed to target and remove the cells that may trigger harmful antibodies, which attack the body’s own tissues in these conditions.
Who can join this study?
You may be eligible to participate in this study if you:
- Are 18 to 75 years old
- Have been diagnosed with rheumatoid arthritis (RA)
- Have received prior autoimmune disease treatments that may have not worked well for you
Compensation
If you are eligible and choose to participate, you will receive NKX019 and health assessments from a team with expertise in caring for people living with autoimmune disease. Costs for travel, lodging, childcare, and meals will be covered when you and your care partner go to the study clinic. Compensation for study participants and your care partner may also be available.
The Ntrust-2 study
The Ntrust-2 study is part of a broad effort of the global research community to develop more treatment options for people living with rheumatoid arthritis.
What is NKX019?
NKX019 is an investigational cell therapy being studied for rheumatoid arthritis (RA). It is designed to target and remove the cells that may trigger harmful antibodies, which attack the body’s own tissues in these conditions.
Who can join this study?
You may be eligible to participate in this study if you:
- Are 18 to 75 years old
- Have been diagnosed with rheumatoid arthritis (RA)
- Have received prior autoimmune disease treatments that may have not worked well for you
Compensation
If you are eligible and choose to participate, you will receive NKX019 and health assessments from a team with expertise in caring for people living with autoimmune disease. Costs for travel, lodging, childcare, and meals will be covered when you and your care partner go to the study clinic. Compensation for study participants and your care partner may also be available.
Conditions:
Rheumatoid
Rheumatoid Arthritis
Arthritis
Rheumatoid
Rheumatoid Arthritis (RA)
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 Therapy
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Risks may include surgical, device, and stimulation-related complications. See important safety info: https://83b.co/tlcbld
Take our quick survey to see if this system could work for you.
Risks may include surgical, device, and stimulation-related complications. See important safety info: https://83b.co/tlcbld
Conditions:
Overactive Bladder
Urinary Incontinence
Idiopathic Overactive Bladder
Incontinence
Healthy
Study of Dapansutrile Tablets in Subjects With an Acute Gout Flare
Recruiting
The purpose of this trial is to investigate the efficacy and safety of dapansutrile (OLT1177®) tablets in subjects with an acute gout flare.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/23/2025
Locations: American Institute of Research, Los Angeles, California +2 locations
Conditions: Acute Gout Flare, Gout Attack, Gout Flare, Gouty Arthritis, Gout, Arthritis, Joint Pain
National Program to Overcome Pelvic Pain studY (POPPY)
Recruiting
A randomized, parallel-group, investigator-blinded, comparative effectiveness trial of a fully remote, videoconference-based pelvic floor yoga program versus a physical conditioning program for women with chronic pelvic pain syndrome.
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
05/21/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Chronic Pelvic Pain Syndrome (CPPS), Chronic Pelvic Pain Syndrome, Chronic Pelvic Pain
The Effects of Endotracheal Suctioning on Pain and Serum Markers
Recruiting
The goal of this experimental study is to understand if endotracheal tube (ETT) suctioning increases pain and causes stress on the body in intubated adult ICU patients. These patients are already on ventilators, which means they need suctioning to keep their airways clear, but this procedure may be uncomfortable and cause stress.
The main questions this study aims to answer are:
Does ETT suctioning raise pain levels as measured by the Critical-Care Pain Observation Tool (CPOT)? Does ETT suctio... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/19/2025
Locations: Loma Linda University Medical Center Troesh Medical Campus, Loma Linda, California
Conditions: Intensive Care Unit ICU, Intubation, Critical Illness, Mechanical Ventilation, Pain Measurement, Pain, Procedural, Oxidative Stress, Hypoxia, Biomarkers / Blood, Adult, Uric Acid, Sepsis, COVID, Influenza, Pneumonia
Sequential and Comparative Evaluation of Pain Treatment Effectiveness Response
Recruiting
VETERANS ONLY. Chronic low back pain (cLBP) is common. Most Americans will have at least one episode of low back pain in their lifetimes. Approximately 50% of all US Veterans have chronic pain, and CLBP is the most common type of pain in this population. This study will use a sequential randomized, pragmatic, 2-step comparative effectiveness study design. The main goal is to identify the best approach for treating cLBP using commonly recommended non-surgical and non-pharmacological options. The... Read More
Gender:
ALL
Ages:
All
Trial Updated:
05/15/2025
Locations: VA Loma Linda Healthcare System, Loma Linda, CA, Loma Linda, California +2 locations
Conditions: Chronic Low Back Pain
The Role of Virtual Reality During Regional Anesthesia
Recruiting
In this study, we will analyze the role of virtual reality in acute pain and anxiety management for regional anesthesia in pre-operative patients at Cedars-Sinai Medical Center.
Gender:
ALL
Ages:
Between 18 years and 64 years
Trial Updated:
05/12/2025
Locations: Cedars Sinai Medical Center, Los Angeles, California
Conditions: Anxiety, Pain
TMS for Complex Regional Pain Syndrome
Recruiting
The aim of the current study is to assess the efficacy of TMS in the treatment of Complex Regional Pain Syndrome (CRPS). It is hypothesized that participants who receive TMS (Group 1) relative to sham treatment (Group 2) once daily for two days will demonstrate a greater improvement in CRPS-related pain and other associated symptomology (i.e., cognitive, emotional and physical) compared to baseline. Participants will be followed until they reach their baseline for two consecutive weeks to assess... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
05/12/2025
Locations: Stanford Pain Management Center, Redwood City, California
Conditions: Complex Regional Pain Syndromes
Diagnostic and Prognostic Biomarkers for High-impact Chronic Pain: Development and Validation
Recruiting
To identify diagnostic and prognostic biomarker signatures of recovery versus having persisting high-impact chronic pain and functional disability in adults with Chronic Musculoskeletal Pain.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
05/12/2025
Locations: Stanford University, Palo Alto, California
Conditions: Chronic Musculoskeletal Pain, Pain, Pain, Chronic, Joint Pain
Cannabis Effects as a Function of Sex
Recruiting
The purpose of this research is to assess the impact of cannabis on the analgesic and abuse-related effects between men and women
Gender:
ALL
Ages:
Between 21 years and 55 years
Trial Updated:
05/08/2025
Locations: University of California, Los Angeles, Los Angeles, California
Conditions: Pain, Abuse, Drug
A Clinical Trial of Intravenous Lidocaine After Spinal Surgery to Prevent Delirium and Reduce Pain
Recruiting
Postoperative delirium is one of the most frequent adverse events following elective non-cardiac surgery and is associated with cognitive impairment at discharge, as well as in-hospital and long-term mortality, however, despite being a well-recognized problem there is a dearth of effective interventions for prevention and management. A modifiable risk factor associated with postoperative delirium is poor postoperative pain control, and by improving the pain regimen the investigators may be able... Read More
Gender:
ALL
Ages:
60 years and above
Trial Updated:
05/05/2025
Locations: University of California, San Francisco, San Francisco, California
Conditions: Postoperative Delirium, Postoperative Pain, Spinal Fusion
Obstetric Placement Study Using EST
Recruiting
Combined spinal-epidural (CSE) is an established technique for providing labour analgesia to obstetric patients which provides rapid onset but unsustained analgesia. The epidural catheter can be used to extend and provide continuous pain relief, however during single-segment needle-through-needle CSE, the catheter is untested. This study aims to confirm placement of epidural catheters of anesthesia through the epidural stimulation test (EST) which was first described by the PI of the study for c... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
04/30/2025
Locations: Lucille Packard Children's Hospital, Palo Alto, California
Conditions: Obstetric Pain, Anesthesia, Local
Age-dependent Effects of Smoked and Oral Delta-9-THC
Recruiting
This study will assess the age-dependent effects of smoked and oral THC on abuse liability, intoxication, analgesia and impairment as a function of age.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
04/28/2025
Locations: UCLA Center for Cannabis and Cannabinoids, Los Angeles, California
Conditions: Pain, Abuse, Drug, Intoxication; Cannabinoids
Managing Opioid Related Sleep Apnea With Acetazolamide
Recruiting
Patients with chronic pain who use opioids appear to be at increased risk for breathing issues during sleep, termed sleep disordered breathing (SDB). Treatment of SDB often consists of use of a device during sleep that provides continuous positive airway pressure (CPAP) via a mask interface. However, this device is not effective or tolerated in all individuals. The goal of this study is to examine whether a medication called acetazolamide can improve SDB, as an alternative to CPAP treatment.
Th... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: University of California San Diego, San Diego, California
Conditions: Sleep-Disordered Breathing, Obstructive Sleep Apnea, Central Sleep Apnea, Chronic Pain, Opioid Use
49 - 60 of 139
