COVID-19 Laboratory Testing

Testing for COVID-19 is a critical part of San Francisco's response. The number of tests collected and the number of new cases per day tells us if we are succeeding in our efforts to prevent infections, and they point to where more work is needed to protect the community.
On March 24, the Health Officer ordered all labs in the City to report complete COVID-19 testing information to the local and state health departments. There continues to be an increasing trend in the number of available testing sites and overall number of tests conducted in San Francisco. COVID-19 testing is available for free to any San Francisco resident with symptoms or any essential worker (with or without symptoms), especially those who are uninsured or have barriers to healthcare. Learn more about getting tested.
Note: Positive tests results are investigated after receipt. The total number of positive test results will not be equivalent to the total number of COVID-19 cases in San Francisco for several reasons. After investigation, some test results are found to be for persons living outside of SF and some are duplicates of previously received results. These are subsequently removed and are not included in the total SF COVID-19 case count. Additionally, investigation of positive test results might not be completed on the day of receipt; new cases will be added to the total case count after full investigation and verification.
Source data: COVID-19 Tests
Data Notes: These data include a daily count of test results collected. Collected tests include tests with a positive, negative or indeterminate result. Indeterminate results, which could not conclusively determine whether COVID-19 virus was present, are not included in the calculation of percent positive. Testing for the novel coronavirus is available through commercial, clinical, and hospital laboratories, as well as the San Francisco Public Health Laboratory.