The tube contains a small amount of liquid that only fills the bottom, as illustrated below. The amount of liquid may not look exactly like the photo in the User Instructions. The liquid in the tube should cover the bottom of the swab and test strip when immersed. The entire swab tip and arrows on the test strip do not need to be completely covered by the liquid. Please ensure to stir the swab 3-4 times in the liquid before the 1-minute incubation step.
Examples of tubes and expected liquid solution levels:
Only a pink line about half of a centimeter below the blue control line should be considered a positive result. A pink line bordering the black label with the arrows, a vertical pink line, or a faint grey line next to the blue control line is not considered a positive test line and should not be called a positive result.
Only a pink line about a half of a centimeter below the blue control line in the Test Line Region should be considered a positive result. Pink lines in any other are of the test strip should not be called a positive result.