I took the test in the morning and I didn’t wait the full 10 mins I actually just thought it’s 3 mins wait and it’s done. Actually you should wait at least 10 mins to see what happens! Anyways I put it in the bin, I was cleaning up later in the day like a few hours later... and I checked it and I was surprised to see a faint line. Has anyone got any experiences of Evaporation lines? Apparently this could be one and I should just ignore? Thanks all

the test! Attached a pic.