Verkkoa vague result might indicate a very faint positive pregnancy test or even just an evaporation line. In this article, you’ll learn how to tell the difference. Verkkoif the answer to these questions is yes, even though the line may not be as dark as the control line, it's likely a faint positive. If the line you're looking at is. Verkkoin most cases, it’s not a true positive, but rather a very cruel and confusing phenomenon called an evap line. You may already know when to take a.