Federal And State Coronavirus Resources California Call your health care provider or local public health department to be evaluated for testing if you are symptomatic, may have had contact with a person with coronavirus, or recently traveled to countries that have community spread. As of March 13, California had 18 public health labs testing for coronavirus, with three more expected to be offering tests by next week. There are some private labs testing as well, though the state is not tracking their testing data. For a patient to be tested by a public health lab, their provider must contact the local public health department for approval and instructions. Most test results are available within 48 to 72 hours. The state has requested all labs notify the Department of Public Health about positive results. For more coronavirus information, visit the California Department of Public Health’s webpage.