How to interpret a NEGATIVE result with the UScreen Cup?
A colored band must be visible in each control region (C) to indicate that the test is valid. If a colored band is visible in any of the Test Regions (T), it indicates that concentration of the drug in the corresponding test zone is absent or below the detection limit of the test. Certain lines may appear lighter or thinner than other lines. ANY COLORED LINE VISIBLE IN THE TEST REGION (T), SHOULD BE INTERPRETED AS A NEGATIVE RESULT. NO MATTER HOW DARK OR FAINT THE LINE, THE TEST SHOULD BE INTERPRETED AS A NEGATIVE RESULT.
Interpreting the Results:
| Negative A negative result is indicated by the presence of both a “C” control line or and a “T” test line for each designated drug. |
Negative The presence of a “C” control line and a very light “T” test line indicates a negative result. Any indication of a “T” test line is interpreted as a negative result. |
Positive A positive result is indicated by the presence of a “C” control line and the absence of a “T” test line. Wait 5 minutes to read positive results. |
Invalid An invalid result is indicated when the “C” line is completely missing from one or more test windows. If this happens, run another test. |
