Clinical trials near you
Clinical trials in California
Studies are recruiting volunteers in these metro areas in California. Choose yours to see which conditions are studied there and the most active research sites.
- Los AngelesLos Angeles-Long Beach-Anaheim, CA3,257 studies · 2,349 sites · 225 conditions
- San DiegoSan Diego-Chula Vista-Carlsbad, CA1,212 studies · 645 sites · 188 conditions
- San FranciscoSan Francisco-Oakland-Fremont, CA1,014 studies · 622 sites · 183 conditions
- San JoseSan Jose-Sunnyvale-Santa Clara, CA933 studies · 292 sites · 167 conditions
- SacramentoSacramento-Roseville-Folsom, CA589 studies · 262 sites · 135 conditions
- RiversideRiverside-San Bernardino-Ontario, CA436 studies · 265 sites · 118 conditions
- FresnoFresno, CA150 studies · 73 sites · 72 conditions
Other states
- Alabama
- Arizona
- Arkansas
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Virginia
- Washington
- West Virginia
- Wisconsin
Cite these figures
Free to use under CC BY 4.0. Please credit LocalTrial with a link to this page.
As text
Source: LocalTrial, Clinical trials in California, https://www.localtrial.com/clinical-trials/california, updated November 12, 2026.
With the link, for a web page
Source: <a href="https://www.localtrial.com/clinical-trials/california">LocalTrial, Clinical trials in California</a>, updated November 12, 2026.
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