Testing

Last updated September 14, 2022 at 12:59 PM

COVID-19 testing is confidential and available to every Californian.

On this page:

How to get tested

Use an at-home test

Test yourself and get results in less than 30 minutes.

Plan ahead to have test kits on hand before you get sick. Kits are available at most pharmacies without a prescription.

Read more about at-home tests:

Get free tests

At-home tests you can get at the store are now free or reimburseable for most people.  

About expiration dates

Most antigen tests can be used safely past the expiration date on the box. The FDA has approved them for test expiration extensions. 

Details: 

Tests can also be used past extended expiration dates if the internal test control continues to function properly. See these guidelines: 

Find testing near you

See a map of testing sites near you:

Find a testing location

Other testing sites may be available at your area’s COVID-19 website.

Find Test to Treat locations

At some testing sites, you can get medication for COVID-19 if you test positive and are eligible. These sites are called Test to Treat.

COVID-19 medication can prevent hospitalization and death. It works best if started right away. Test to Treat is an easy way to get this medication early.

Find Test to Treat near you

Get tested and treated with OptumServe

California has partnered with OptumServe to provide free, confidential testing statewide. Tests and medication are available for:

  • Uninsured or underinsured people 
  • Undocumented people 
  • People experiencing homelessness 
  • People who are at high risk and need COVID-19 medications

You do not need a driver’s license or ID. Appointments are recommended, but walk-ins are welcome. Find a location near you at: 

Register for OptumServe

Or call 1-888-634-1123.

When to get tested

If you have symptoms

Vaccinated or not, get tested immediately if you’re feeling any COVID-19 symptoms. If an antigen test is negative, take another in 24-48 hours, as early cases can be missed.

If you were exposed

Anyone exposed should consider getting tested as soon as possible, even if you have no symptoms.

Test again 5 days after exposure.

If you go to a high-risk event

Test before and 3-5 days after.

For mega-events of more than 1,000 people, it’s strongly recommended to test 1 day (antigen test) or 2 days (PCR test) before the event.

If you travel

Test before travel, and 3-5 days after.

Vaccinated or not, anyone entering or re-entering California should test 3-5 days after arrival.

Read more in CDPH’s testing fact sheet.

Testing at work

Screening tests are recurring tests of people without symptoms in certain high-risk workplaces. They help detect COVID-19 early and stop transmission.

In general,

  • Vaccinated individuals do not need screening tests in non-healthcare settings
  • Healthcare settings may have other requirements 

Read CDPH’s Updated Testing Guidance for more about workplace screening tests.

Questions and answers

What should I do if I may have been exposed to COVID-19?

Regardless of your vaccination status: 

  • Get tested 3-5 days from your last exposure 
  • Wear a mask around others for 10 days, even at home 
  • If test result is positive, isolate 

If you had COVID-19 within the last 90 days, test and isolate if you have symptoms. If you have no symptoms, you do not need to test. 

Learn more about when and how to isolate, quarantine, or test. 

What should I do if I test positive for COVID-19?

As soon as possible, ask your doctor if you are eligible for treatment. If you don’t have a doctor or are uninsured, schedule an appointment with OptumServe or call 1-888-634-1123.

Treatment works best if started right away. Do not wait for symptoms to get worse. Read more about COVID-19 treatments.  

Isolate (stay home and avoid others) until the threat of infecting other people has passed. Read about how long to isolate. 

Notify people you have been in contact with so they can get tested too. Send an exposure notification through CA Notify.

Does my health plan have to cover my COVID-19 test at a testing site? 

Yes. Health plans must cover COVID-19 testing at no cost to you.

  • You can get a COVID-19 test at no cost from any provider at any time (in- or out-of-network) 
  • You should not pay anything for a COVID-19 test, including a co-pay or payment toward a deductible
  • You do not need to have symptoms or to have been exposed to COVID-19

Learn more at Know Your Healthcare Rights: COVID-19 Testing.

What if I don’t have health insurance and I need COVID-19 testing?

OptumServe testing is free for all. Schedule an appointment or call 1-888-634-1123. Walk-ins are welcome.

Other testing sites may provide free tests. Contact the site and see if there is a cost.

Free at-home tests are also available by mail. Limits apply. These cannot be shipped to P.O. boxes.

How long does it take for COVID-19 test results to come back?

At-home tests give results in 15-30 minutes. 

Results from rapid antigen tests are available in an hour or less.  

PCR and other molecular tests sent to a lab are usually returned in 1-2 days after the lab gets the test. This does not include transport time.  

If you haven’t received your test results and it’s been several days, contact the testing site.

What is acceptable as proof of a negative COVID-19 test result?

At-home COVID-19 tests may be used if a photograph of the completed test is taken with a time and date stamp. See CalOSHA testing FAQs for details. 

In settings where at-home tests are not allowed, results should include: 

  • Name of person tested
  • Type of test 
  • Date of negative test result 

The results should be a printed document, email, or text message from your test provider or laboratory. 

Test must have been taken in the last:  

  • 1 day for an antigen test, or
  • 2 days for a PCR test.

Stay informed