help reading lines

The 1st test is the 1st I took and the 2nd pic is the 2nd one I took. I do see a faint line in the first when I put the filter on it but it really doesn't look blue and in the 2nd I dont see anything. also in the first if you look by the oval there's a weird horizontal thin like just like the other one idk any advice is welcome

update its so barely there could it just be an indent line? they are the dollar general brand if that helps