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San Mateo, CA

Where to get free or low-cost STD testing in San Mateo, California

Most community health centers offer confidential STD and HIV testing on a sliding scale, and access matters most where the burden is highest: Black Americans account for roughly a third of chlamydia, gonorrhea, and syphilis diagnoses nationwide despite being 12.6% of the population (CDC, Sexually Transmitted Infections Surveillance, 2023).

See 7 local clinics

How to get STD testing free or at low cost in San Mateo

Testing at a community health center, a health department STD clinic, or a site on CDC's locator is confidential, and none of them requires insurance.

  • 7 community health centers in San Mateo

    Federally qualified health centers, required to see you regardless of ability to pay, with fees on a sliding scale by income.

    See the list

  • Your county health department's STD clinic

    Most counties run one, typically free or low cost, confidential, and often walk-in.

  • CDC's testing locator

    Finds HIV, STD and hepatitis testing sites by ZIP code and flags free or low-cost options.

    Open gettested.cdc.gov

When you call, ask

  • "Do you offer STD testing at this location?"
  • "What would it cost me without insurance, on your sliding scale?"

Community health centers in San Mateo

7 federally qualified community health centers in San Mateo charge on a sliding scale by income and see patients regardless of insurance. Call ahead to confirm the site offers STD testing and to book.

See every community clinic in San Mateo

Every site above tests free or at low cost based on income, and that is the right first stop. An at-home kit is self-pay and is not billed to Medicaid, so the clinic route usually costs less. If you would rather test at home:

Everlywell

At-home STI test panels covering chlamydia, gonorrhea, HIV, herpes, and syphilis, with a mail-in sample and physician-reviewed results online.

Browse at-home STI tests

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Other free screening in San Mateo

Breast cancer Cervical cancer Colorectal cancer Cardiovascular Diabetes prevention