Quick question. Do lft tend to fade as the days go on or can you have a strong positive day 5 then negative day 6? Due to work my dh has had to move out whilst until ds tests negative. Done a lft on him today and still strong positive. Any chance it will just disappear by tomorrow or do the lines tend to fade to negative? We are Scotland so. Am only end isolation (and get husband home) once da is testing negative for 2 tests 24hr apart. Hope that make sense