i bought two tests earlier, one that tests for THC only, and another that tests for 5 diff kinds.

took the THC test, half a faint line..assumed its fail ghost line.

took the 2nd one (multi-drug test) hours later....4 out of 5 results showed two opaque, clearly visible lines. the one under THC, 2nd line was very faint...im assuming that its a ghost line since the paper/fabric was soaked.