The news that the Biden Administration is considering asking Robert Califf to return as Commissioner of the US FDA is the latest twist in a most unusual transition process at the agency. But one message seems abundantly clear: the White House is perfectly happy with FDA as it is.

Many supporters believe Robert Califf checks all the boxes, but if nominated he would also face many familiar confirmation challenges.

The recall is related to the software’s mixing parameters, which may cause false positives if test samples contaminate each other.

The recall is related to potential false positives that may occur if a genuine positive test sample overflows into an adjacent sample that would have otherwise tested negative.