Does every pregnancy test have an indent or evap ?

I am truly interested to know if every single pregnancy test will show either an evap or an indent after the time it states on packaging. For example, i took a few dip stick tests and they came out with vvvf second lines (or so I thought) and then when I checked later on I saw the lines even more. So is that an indent or evap on multiple test strips??

Here is a picture of my dried tests. I know they are considered INVALID. Thats not what I am asking. Ty