Ask test subject to pass urine into a container
Dip the test strip into the urine making sure that the urine does not come above the 'MAX' line
Wait 5 minutes.
Read the test
a) The top red strip labelled 'C'
is the Control strip and should always be present. If this is missing the test is invalid and should be repeated with a new drug test strip.
b) The bottom red strip labelled 'T'
is the Test strip If it is present, even faintly, then the test is negative.
c) A Preliminary Positive result is indicated by a red 'C'
strip and completely absent 'T'
strip. This result should be confirmed by specialised testing for that particular substance by GC-MS or LC-MS methods.