One Step marijuana test dip card, detects THC

MD DrugScreen THC one step marijuana test dip card, 99% reliable.
Very easy to use. Provides results in less than 5 minutes.
The dip card with an absorbent end is dipped in the sample for 10 seconds.
The dip card is then placed on a flat, dry, non-absorbent surface.
The results can be read after 5 minutes.
The pink stripe on the test device marks whether the test is positive, negative or invalid.