The United States is seeing a second peak in flu cases this season. After doctor’s office visits for flu dipped early this ...

For the clinician, this means that although false-negatives are frequent (occurring in nearly four out of ten negative RIDTs), a positive test is unlikely to be a false-positive result.

A Brisbane man who took part in the University of Queensland’s aborted Covid vaccine trial is still returning “false positive” HIV tests four years later.

8 A single titer, therefore, no matter how high, is of no value in excluding a biologic false positive test, and repeated quantitative tests for observation of unusual titer behavior are necessary.