If a test has 5% false-positive rate, you can't just test 5 times and expect to have a <0.000001 false positive rate, maybe not less than 1% or even 4% - depend

If a test has 5% false-positive rate, you can't just test 5 times and expect to have a <0.000001 false positive rate, maybe not less than 1% or even 4% - depends on the test and how you repeat it. If they test you for antibodies, and your blood reacts, doing the same thing 5 or 50 times is not going to help. If you have a wobble on your EKG, it's not going away just because you measure it 10 times. Though it might, if you were just stressed the first time. Or they might find something 2 out of 10 times and then what - do you just ignore it? To be clear, I'm not against non-invasive voluntary testing, but procedures need to be adjusted, otherwise people get treatments they don't need and suffer the effects (while also tying up actual doctors and equipment). BTW sorry about your issues. Those were false negatives, and you had symptoms, where better/additional/more tests are warranted.