If a health worker gets tested weekly when swab test has like x% false positive chance, wouldn’t the person almost certainly gets falsely tested once?

Question

If a health worker gets tested weekly when swab test has like x% false positive chance, wouldn’t the person almost certainly gets falsely tested once?

In: Biology

Answer 1

Dependant on how many test they take and the value of x. If x=90% false positive over 10 tests, then it is highly likely they get a false. If x=.1% over 100 tests its easily possible that they never have one.