The ICON Digital Circuit Tester is a new test light that is available at Harbor Freight. Unlike an old-school device, this light provides a bright red (positive) or green (negative) LED numeric ...

A Seattle-area startup called Pattern Computer is developing a rapid COVID-19 test based on patterns in light from spit, one of several projects moving ahead from the 7-year-old company that ...

Many of us have taken a rapid antigen test (RAT) or have administered them to our school-aged children. But how many of us are using them correctly? Here are 15 pitfalls to avoid if you want to ...