Evap? Or vvfl? Using this test for comparison down the road

So I have received evaps on these tests in the past, however, none that looked like this or even blue, they are usually more grey in my personal experience. I am just curious if anyone else has had this and what the results were. Please don't comment with the test is invalid. This line was there when I took it apart. I am using this test and photo to compare with future tests.