Think Your COVID Test is Accurate?- Think Again! Maybe it's not: From a Walgreens email I received today- US Food and Drug Administration Potential for False Positive Results with Antigen Tests for Rapid Detection of SARS-CoV-2 - Letter to Clinical Laboratory Staff and Health Care Providers Today, the U.S. Food and Drug Administration (FDA) is alerting clinical laboratory staff and health care providers that false positive results can occur with antigen tests, including when users do not follow the instructions for use of antigen tests for the rapid detection of SARS-CoV-2. The FDA is aware of reports of false positive results associated with antigen tests used in nursing homes and other settings. The FDA continues to monitor and evaluate these reports and other available information about device safety and performance. The FDA reminds clinical laboratory staff and health care providers about the risk of false positive results with all laboratory tests. These are expected, especially when tests are used for screening in large populations with a low prevalence of infection. Clinical laboratory staff and health care providers can help ensure the accuracy of test results by closely following the authorized instructions for use of a test as well as key steps in the testing process as recommended by the Centers for Disease Control and Prevention (CDC).  Read More The Letter to Clinical Laboratory Staff and Health Care Providers includes important information about potential false positive results with antigen tests for rapid detection of SARS-CoV-2, including: Details on false positive results with antigen tests Recommendations for health care providers and clinical laboratory staff Actions the FDA is taking Instructions for reporting problems with a device.  Questions? If you have questions about this Letter to Clinical Laboratory Staff and Health Care Providers, email COVID19DX@fda.hhs.gov.