Blue Lines That Don't Mean What You Think: The Science Of Evaporation Lines

Verkkowhat is an evaporation line on a pregnancy test? An evaporation line (or evap line) is a faint line on a pregnancy test that shows up after urine dries on. 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. Verkkoone of the most common lines people may see is an evaporation line (also known as an evap line), which appears on certain types of pregnancy.

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