Is a white line considered a Preliminary Positive Result?
Yes. A white waxy looking line in the Drug Window (sometimes referred to as a “ghost line”) is considered a Preliminary Positive Result and should be sent into the lab for confirmatory testing. A Negative Result can only be based on the appearance of a red or pink colored line in the Drug Window. Even if the line in the Drug Window is very faint, as long as there is some red or pink color to it, it is considered a Negative Result and should not be sent to the lab for confirmatory testing.
