While an evaporation line can appear on a pink or blue dye test, many frequent testers on popular online pregnancy and fertility forums adamantly argue that blue tests are more prone to these deceptive shadows.2 jun 2020
Does an evaporation line have color?
The key difference is that an evaporation line is colorless (which may appear as a faded gray on most tests). This is an important distinction because if your test is positive, the line that tells you it's a positive result will appear in the same spot as the evap line—but will have some color to it.
Do EVAP lines have color when inverted?
Saying that ANYTHING pink at all (assuming a pink dye is used) when inverted will turn green. An evap line that's usually grey or whitish will remain a dull color.
How do you know if its an evaporation line?
A mark on a pregnancy test may be an evaporation line if: More than 10 minutes have passed since taking the test. The mark is faint and colorless, and it resembles a water spot. The mark has no visible dye in it.31 jul 2018