Putting water on evap? Line still there..

Took a test before work this morning, got what I thought was a negative, went to work.

Came home, looked at the test again (dumb I know), and saw a faint line! I figured it’s an evap..

I dipped the test in water to see if evap would disappear.. and the line is still there.. thoughts?

*pic is after dipping in water to see if line would disappear*

Vote below to see results!