I took a pink dye test yesterday and looked at it about 5 minutes later and thought it was negative and threw it away.

I took another pink dye test once I woke up today and thought I could possibly see a faint line within 2-3 minutes. I pulled the old test out of the trash and it now has a dark line on it? Would you consider that an evap line since it is over the 10 min window?

I recently checked the one I took earlier today (about 6 hours ago) and it also has a darker line as well now! Anyone else experience this?