You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen ...

At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...

Pre-admission screening for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) was essential during the COVID-19 pandemic in Korea. The pooled real-time reverse transcription (rtRT)-PCR test ...