Clinical trials · California
COVID-19 clinical trials in California
We’re tracking 32 recruiting covid-19 studies with a site in California — including Phase 1/Phase 2 and Phase 2 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT04705766Recruiting
Study kidney injury after recent COVID infection
This study looks at how COVID can affect the kidneys soon after infection. You may be able to participate if you recently tested positive for COVID and have not had kidney replacement treatments.
San Francisco, CaliforniaAges 18 years+ - NCT04815096RecruitingPhase 2
PET scan study of immune activity after COVID-19
This Phase 2 study uses a special PET scan to look at how active your immune system is after a recent COVID-19 infection. The goal is to understand what the immune response looks like and whether this imaging approach could help guide care.
San Francisco, CaliforniaAges 18 years+ - NCT05013632Recruiting
COVID-19 pregnancy medicine registry for expecting or recent mothers
This study is a registry that collects information about COVID-19 during pregnancy, including what treatments were used and pregnancy outcomes. It may help doctors better understand the safety and effects of COVID-19 medicines in pregnancy.
Los Angeles, CaliforniaAges 18–50 - NCT05123755RecruitingPhase 2
Testing a new medicine in hospitalized pneumonia patients needing oxygen
This Phase 2 trial tests an investigational medicine (given in increasing doses) for hospitalized people with pneumonia who need supplemental oxygen. It aims to see if the medicine is safe and potentially helps the pneumonia process in the early hospital period.
Newport Beach, CaliforniaAges 18 years+ - NCT05868239Recruiting
Testing an aerosol box during CPR emergencies
This study tests whether using an aerosol “box” during cardiopulmonary resuscitation (CPR) during an emergency improves safety and care. It’s mainly aimed at trained healthcare staff who can perform required tasks during CPR.
Los Angeles, CaliforniaAges 18–60 - NCT06810934RecruitingPhase 1/Phase 2
New COVID-19 vaccine study for those with prior mRNA vaccines
This study tests a new type of COVID-19 vaccine that is designed to train your immune system to make stronger, longer-lasting protection. You may be able to join if you are 40–64, have already had at least two doses of a mRNA COVID-19 vaccine (Pfizer or Moderna) more than 4 months ago, and are generally healthy.
Los Angeles, CaliforniaAges 40–64 - NCT07147517Recruiting
Tracking respiratory viruses in your community and home
This study tracks how respiratory viruses spread in the community and within households. It involves testing and collecting samples from people who are sick or healthy, to help better understand and prevent outbreaks.
San Ysidro, CaliforniaAges Any age - NCT05589376Enrolling by invitation
Healthy people registry study for you and me
This study sets up a registry of healthy people who can answer surveys and assessments. It helps researchers understand health and how people feel over time, even if you’re not being treated for a specific illness.
Merced, CaliforniaAges 2 years+
COVID-19 trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting covid-19 studies listed above.
- University of California, San Francisco · 2 studies
- Children's Hospital Los Angeles
- Hoag Memorial Hospital Presbyterian
- Merced County
- Pregistry
- San Ysidro Health
- UCSF
- University of California San Diego Health
What taking part in a covid-19 study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
COVID-19 trials in other states
Common questions
- Are there covid-19 clinical trials in California?
- Yes. We're currently tracking 32 recruiting covid-19 studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a covid-19 study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a covid-19 trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New covid-19 studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.