4. What type of test is considered the gold standard for detecting COVID-19?
   Antigen test

The gold standard for detecting COVID-19 is the polymerase chain reaction (PCR) test. This test detects the virus’s genetic material, making it highly sensitive and specific. It’s known for its accuracy and is usually performed on a sample collected via nasal swab. Because of its reliability, PCR tests have been widely used in clinical settings and during the pandemic to confirm active infections.

In a real-world scenario, PCR tests can take a few hours to a few days to return results, depending on the lab’s workload. While some prefer rapid antigen tests for quick responses, they are less effective at detecting the virus in asymptomatic individuals. Therefore, understanding the differences between these tests helps individuals make informed decisions about testing options based on their needs.