NEGATIVE: A coloured line appears in the control region (C) and another coloured line appears in the test region (T). This negative result means that the concentrations in the oral fluid sample are below the designated cut-off levels for a particular drug tested. NOTE: The shade of the coloured lines(s) in the Test regions (T) may vary. The result should be considered negative whenever there is even a faint line.
POSITIVE: A coloured line appears in the control region (C) and no line appears in the test region (T). The positive result means that the drug concentration in the oral fluid sample is greater than the designated cut-off for a specific drug.
INVALID: No line appears in the control region (C). Insufficient specimen volume or incorrect procedural techniques are the most likely reasons for Control line failure. Read the directions again, and repeat the test with a new test device. If the result is still invalid, contact your manufacturer.