Beware blue dye tests

Would you all believe this is an Evap/indent.  This is my stick , got the same result in 5 others , 2 different brands......because we just didn't believe it...but I also tested with water got the same EXACT result.  The reason I did this is because after this faint "positive" we went to the doctor and got a blood test.  BFN.  When I tested with the water and got the same result I threw the rest of the tests away.  Talk about a let down...pink dye from herein.