What would you do

[GizmoIsSoFluffy]

Test twice a week for school.
Positive lft result after 35 mins 10 days ago. Repeated test, same result.
PCR booked for next day, came back negative.
LFTs still showing positive twice weekly. Still going to school as PCR was negative.
Performed another PCR tonight. But she was negative last time. Don't know what to do for the best. One test says positive, but the main one day's negative. Help.

You need to wait 30 mins for result on LFT. Any longer and result is void.

Make sure you're using the 30 minute and not 15 minute ones - the drying lines can show up as positive after the correct time has lapsed. If the LFTs are still showing positive, I would do a second PCR too.

We are told to go by PCR tests as they are supposed to be more accurate, so I would go along with that.

I would assume positive and isolate until the second pcr comes back.