Old test but 2 pink lines

I took a pink dye test a few days ago and for whatever reason as it showed negative, I threw it under my sink and forgot about it until this afternoon when I was cleaning. I know evap lines are generally colorless and thinner, but this test had 2 solid pink lines on it! I wish I would have gotten a picture.

Has this happened to anyone else and they’ve been pregnant?

I plan on testing again on Saturday morning, but I’ve never seen an old test have a second full color line on it, and everything I’ve read says that any amount of hcG will give you a colored line no matter the time frame.

Is this accurate??