Instructions:

Positive:  A rose-pink band is visible in each control region and NO color band appears in the appropriate test region. It indicates a positive result for the corresponding drug of that specific test zone.
Negative:  A rose-pink band is visible in each control region and the appropriate test region. It indicates that the  concentration  of  the  corresponding  drug  of  that  specific  test  zone  is  zero  or  below  the detection limit of the test.
Invalid test result:
If a color band is not visible in the control region or the color band is only visible in the test region, the test result is invalid. Another test should be run to re-evaluate the specimen.