My father was quite positive 15 days ago as he was having little cough, but it went within 3 days, from last 12 days he is not having any symptoms at all, we are giving him k a d h a, zinc and
vitamin tablets , his oxygen level is 99, heart rate is ok and temperature is also normal and didn't developed any symptoms till date, so should he test again for negative result or we can say that he is negative