4:00 p.m. Stanford antibody test close to FDA approval, Newsom says: Stanford Medicine has developed an antibody test to indicate whether a person has developed some immunity to the coronavirus, Gov. Gavin Newsom said in a briefing Saturday. Newsom said the test was “hours” from being approved by the Food and Drug Administration. Dr. Charity Dean of the California Department of Public Health said the serologic, or blood-based, test could determine if a person has been infected and developed antibodies to the virus. People with immunity could theoretically interact with others without risk of catching or spreading the virus. “We’re very excited that this is a California homegrown test that is going to be rolled out in the next week for actual use on Californians,” Dean said.