Verkkofor a red dye test, a faint line will look light pink, whereas a blue dye test will produce a light blue line. See images below to get an idea of what a faint line can look like. How can i avoid getting faint lines on my pregnancy test? Verkkounderstand the difference between a faint line on a pregnancy test that means you're pregnant and an evap (evaporation) line that is colorless and. Faint positives on pregnancy tests appear within the reading window and are lightly colored, often indicating early pregnancy.
