You can order a COVID-19 test online through DoorDash and get same-day delivery. Here's how to do it.

Currently available COVID-19 tests, including PCR tests, are designed to detect any version of SARS-CoV-2, and are not specific for different variants. When should I use an at-home test?

The Biden administration has partnered with Google to help people locate free COVID testing sites. In this photo, a lab technician is working on smears for PCR tests for COVID-19 during the ...

This fact check examines the differences between these rapid tests, called “antigen tests” or “rapid antigen tests”, and PCR - or more formally “RT-PCR” - tests. HOW DO THESE TESTS WORK?

Polymerase chain reaction tests, known as PCR, are the most common and most accurate tests for determining whether someone is currently infected with the novel coronavirus. How do they work?

COVID tests are in short supply, but it's still possible to find some, including for free. Here's what to look for, and how to get an accurate result.

Testing experts suggest an interval of 48 hours before a second test. Now if you do go for a PCR test, you won't have quite the same concerns.

Infectious disease expert Dr. Mark Kortepeter explains the pros and cons of at-home Covid diagnostic tests and how to interpret the results.