Free Diagnostic Test
Diagnostic testing is free and available without restriction to anyone in San Mateo County starting Monday, May 18th, 2020. An appointment is required in advance. To make an appointment, residents can visit Project Baseline’s website - register in English or Spanish
Mondays & Tuesdays
9:00 AM – 4:00 PM
San Mateo County Event Center
1346 Saratoga Drive, San Mateo
Antibody Test
Antibody testing is available for a fee through Quest Diagnostics. This blood test checks for a type of antibody called immunoglobulin G (IgG) that is the result of past or recent exposure to COVID-19, This is not a test for an active infection. It usually takes around 10 to 18 days to produce enough antibodies to be detected in the blood.
What if I test positive?
On April 6, 2020, the San Mateo County Health Officer issued mass isolation and quarantine orders for individuals who test positive for COVID-19 must isolate themselves and not leave their home or other residence except to receive necessary medical care or during an emergency that requires evacuation.
Directions on how to quarantine are available in
For more information visit: https://www.smcgov.org/covid-19-testing
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