Quoting Plus-size-mommy:Right, they are known to be faulty. Pink dye tests are the ones recommended.
Blue line tests are more likely to have evap lines than pink line tests.
Quoting JadeTigr7:Blue line tests are more likely to have evap lines than pink line tests.
I've never had that happen before.
Because of false positives. A lof of them will show a faint line no matter what. My favorite test is First Response Early Results.
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