Negative: Two pink-colored bands appear, one in the control region and one in the test region.

 A negative result indicates free drug is absent from urine or at concentrations lower than the detection cut-off level of the test.
 

Positive: One pink-colored band appears in the control region with no apparent band appearing in the test region 

with no apparent band appearing in the test region. A positive result indicates free drug is present in urine at concentrations at

 or exceeding the detection cut-off level of the test.
 

Invalid: No band appears in the control region, or a pink-colored band appears in the test region only. 

Note: The test band intensity may be weaker or stronger than that of the control band.
An invalid test result may be due to improper assay procedures or damage to the device. 

With an invalid result, the specimen should be re-tested using a new test.