How do I interpret a PRELIMINARY POSITIVE drug test result with the T-Cube?
A colored band must be visible in each control region (C) to indicate that the test is valid. If no color band appears in the appropriate Test Region (T), a preliminary positive result is indicated for the drug corresponding to that specific test zone. The test area must be white to be preliminarily positive. Additional testing is necessary to confirm the preliminary positive results. Positive results should be “confirmed” by an alternate method such as GC-MS or LC-MS/MS.
