Before reading the test result lines, verify that the control line(s) have formed. The control line(s) is the uppermost line in each channel.
Once all control line(s) have formed and the test background clears, the test results are ready to be interpreted.
If one or more of the control line(s) do not appear after approximately 10 minutes, consider the test invalid . Repeat the test using another Rapid TOX Cup II.
A NEGATIVE result for any single drug is the presence of a reddish-purple line adjacent to the drug name.
A PRELIMINARY POSITIVE result for any single drug is the absence of a line adjacent to the drug name.
The Rapid TOX Cup II test results can be interpreted up to 6 hours
The intensity of the test lines may vary. Any line, without regard to intensity, color, or size is a line and indicates a negative result for that drug .