Anyone had evaporation lines on Sainsburys tests?

[LoveHandles88]

I have never had evaporation lines before. But I have heard from a few people that any tests with blue dye tend to throw them up quite often.
Has anyone had experience of this?
I have some FR ready for re-testing, as I am inclined to believe that because the second line appeared after the given time frame, and gradually got darker,(but not wider, it's very thin), over a few hours, it is an evaporation line.

I've not used the Sainsbury tests but u have had an evaporation line. It does sound like that's what it is, at least, you can't really trust it because it's not in the time frame. The FR will give you a clear result either way. Hope it's the result you want :)