It probably depends on what the home test is, the one I think you are talking about even the 'professionals' got it wrong on occasion, I know of somebody that was bad and they had a negative test but the 'professionals' admitted they did not do it right when the person got even more ill as the person did not gag during the test, so that particular test would be difficult to do accurately at home but wasn't that the test that was only 70% accurate anyway ?, perhaps that is why, who knows.