Hmmmm. Thinking its an evaporation line the way its darker at the top and bottom ive had that on first response before. But the best advice is to use first morning urine tomorrow and test again and dont read it after the time limit (usually 10 min) i also suggest snapping a few pics 4 min after you pee on it but before the 8 min mark that will let us give you more accurAte answers! I do see something but like i stated before....I'm wondering if evap due to it looking kind of dry. Also this may be a brand im not used to seeing. Do u know what brand it is?