We already know that when it comes to COVID testing, the PCR test is not perfectly reliable, reporting false positives as well as false negatives. We also know that antigen testing is not entirely ...

BALTIMORE (WBFF) — A patient continued to test positive for the Coronavirus despite no longer being infested. Now new research is shining light on the reliability of Covid PCR Testing. Dr. KC Coffey, ...

Add Yahoo as a preferred source to see more of our stories on Google. For any American wondering if they have Covid-19, there are two kinds of tests available: polymerase chain reaction (PCR) and ...

Ohio Gov. Mike DeWine on Sunday warned Americans against seeing coronavirus tests as unreliable days after he received a false positive result before a scheduled meeting with President Donald Trump.

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Each method is best for a different stage of COVID-19 infection. Used in sequence, all three methods ...

Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends to ...