It is too soon to know how many tests are producing false negatives. When New Orleans freelance writer Sarah Netter first started coughing and showing a fever, her thoughts gravitated to the ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. When it comes to knowing your medical status, the ideal scenario is to ...

Researchers found that testing people for SARS-CoV-2 -- the virus that causes COVID-19 -- too early in the course of infection is likely to result in a false negative test, even though they may ...

Infectious disease specialist Gonzalo Ballon-Landa, MD, of Scripps Health in San Diego, was a bit bewildered. One of his patients who had all the signs and symptoms of COVID-19 had tested negative ...

You test negative for the new coronavirus, but the lab calls back to tell you that is not the case. Why? False positive and negative tests have been on people's minds since major sport leagues like ...

Conventional diagnostic tests for the novel coronavirus may give false-negative results about 30% of the time, meaning people with an active COVID-19 infection still test negative for the disease, ...

A woman in Oklahoma with worsening cold-like symptoms tested negative for Covid-19 three times before receiving a positive test. Now, she wants others to know to not solely rely on test results if ...