A new National Academies of Sciences, Engineering, and Medicine report provides an overview of new approach methods in human health risk assessment of chemicals, and calls on the U.S. Environmental ...

The COVID-19 pandemic brought the term "Polymerase Chain Reaction testing" into the mainstream. The PCR method is a type of ...

There are a couple of different kinds of tests that researchers have developed (and will continue to improve) and clinicians will be using to disrupt the COVID-19 pandemic. One will rely on detecting ...

One of the best ways to figure out how far a virus like COVID-19 has spread in a community is to test for it. This step-by-step guide explains how coronavirus swab-the-nose-and-throat tests work, and ...

COVID-19 is the illness that’s caused by the novel coronavirus, SARS-CoV-2. While COVID-19 is mild to moderate most of the time, it can also cause severe illness. There are a variety of tests that can ...

Antigen tests are one type of rapid test that may help diagnose COVID-19. Some rapid tests can provide results in 15 minutes. But, they may not be as accurate as other types of tests, such as a PCR ...

Most tests for COVID-19 involve taking a swab sample from the back of the nose, throat, or both. But some tests require a blood sample. These tests aim to find out if a person has, or has ever had, an ...