COVID-19 rapid tests are easy to take—and then toss. So most people never report their results, which leaves health officials with an incomplete picture of how much virus is circulating and where. The ...

A rapid DNA testing machine displays 77 minutes remaining on a 90-minute test. The use of rapid DNA testing is becoming more widespread across Connecticut as an evidentiary tool. Credit: Mark Mirko / ...

In a busy clinic in Jackson, Mississippi, a clinician performs a rapid syphilis test on a pregnant woman. Within 15 minutes, the results are in — she is infected — and treatment can begin immediately.

It seems easy enough to take a COVID-19 test at home. But what if your results aren't so simple to interpret? If you get just ...