An evaporation line can also appear if the test gets wet. An evaporation line does not indicate that a woman is pregnant. These lines often occur when a person has checked the result too late or taken the test incorrectly. When an evaporation line appears, it is best to take another test for an accurate result. Click to see full answer.
Can evaporation lines 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.
Does an evaporation line always appear?
Evaporation lines are common on pregnancy tests, but they don't appear every time. It depends on the chemical makeup of each woman's urine. One of the best ways to avoid any confusion when using a home pregnancy test is to check your results within the reaction time.
Can an evaporation line be blue?
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.Jun 2, 2020
How do you tell if it's an EVAP line or positive?
Evaporation lines only appear on tests that show negative results. A positive test would change color in the same spot, blotting out the evaporation line. If a person sees an evaporation line, it means that the test is negative, or it was taken too early in the pregnancy to show a positive result.Jul 31, 2018
Does a faint positive get darker when it dries?
That's because the results are accurate when the urine is still wet. Once it dries, urine may leave a faint line where it evaporated – an "evap line." Unlike positive result lines, which are usually dark or bright, an evap line will be colorless.Apr 20, 2021
Do EVAP lines glow?
Do EVAP lines glow when inverted? One answer I read made sense. 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.Dec 4, 2021
Why did my pregnancy test turn positive hours later?
Evaporation lines happen when the urine that was on the test area starts to dry. The chemical composition of the urine sample changes due to evaporation. As a result, the test may start to display a positive line. After the allotted time has passed, you should discard the pregnancy test to avoid confusion.Oct 17, 2021
What Colour are EVAP lines on clear blue?
On a blue dye test, the line can appear as gray or even a lighter shade of blue. (Note: For some reason, anecdotally, many mamas find that blue dye tests are more prone to evaporation lines.) Sometimes, though, the evaporation line appears as a colorless streak, almost like an indentation.Jul 28, 2021