![]() Consider getting a laboratory-based molecular COVID-19 test or call your health care provider. Test again after 48 hours, and again 48 hours after a second negative test, for a total of 3 tests over 5 days. You could still have COVID-19 and your initial test did not detect the virus. Take public health precautions to prevent spreading an illness to others. You could still have COVID-19 and your initial test did not detect the virus, or you may have another illness. Take public health precautions to prevent spreading an illness to others and take recommended steps after exposure. If you tested negative with an at-home antigen test and you haveĪssume you have COVID-19 and your initial test did not detect the virus. The level of COVID-19 in your community.Close contact with someone who has COVID-19.In addition to COVID-19 test results, and when determining the likelihood of having the virus, consider: Use the following guidance to help interpret your negative test result and determine what steps to take next. Always do a repeat test at minimum after 48 hours following a negative test result when using an antigen test. A negative result using at-home COVID-19 antigen test means the test did not detect the virus that causes COVID-19, but it does not rule out COVID-19 because some tests may not detect the virus early in an infection.Anyone who tests positive for COVID-19, or who likely has COVID-19, should contact their health care provider and follow the CDC's guidelines for staying at home and away from people. A positive result using an at-home COVID-19 antigen test means you likely have COVID-19.While not perfect, they provide a fast and convenient COVID-19 testing option to detect the virus, so you may know if you are infected and should stay at home and away from people to help reduce the spread of the virus. Most FDA-authorized at-home OTC COVID-19 tests are antigen tests. What Your At-Home OTC COVID-19 Test Result Means Consider testing before coming into contact with someone who has a high risk for severe COVID-19 people who are older adults or immunocompromised, or have other medical conditions, especially if you are in an area with a medium or high COVID-19 Community Level.If you are in certain high-risk settings, you may need to test as part of a screening testing program. ![]() If you test too early, you may have an inaccurate result. If you were exposed to someone who has COVID-19 and you do not have symptoms, wait at least 5 full days after your exposure before testing.If you have symptoms, test immediately and then test again per the instructions if your first result is negative.Understanding COVID-19 Infection and the Risk of Spreading the Virus.Step-by-Step Guide: When to Test and What Your At-Home COVID-19 Antigen Test Results Mean.What At-home COVID-19 Antigen Tests Do Not Tell You.What Your At-Home OTC COVID-19 Test Result Means.This means people who receive a negative test result should use multiple tests over a certain period, testing at least twice over three days if they have symptoms and at least three times over five days if they do not have symptoms. Currently, all at-home COVID-19 antigen tests that are FDA-authorized are authorized for repeat testing, also called serial testing. This is especially true early in an infection or in people who do not have COVID-19 symptoms. At-home COVID-19 antigen tests are less likely to detect the SARS-CoV-2 virus than molecular tests, such as polymerase chain reaction (PCR) tests and other nucleic acid amplification tests (NAATs), which detect genetic material called RNA from the virus. At-home over-the-counter (OTC) COVID-19 antigen tests, often referred to as rapid tests, detect proteins called antigens from SARS-CoV-2, the virus that causes COVID-19.
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