Baby Soap Triggers False-Positive Test Results For Marijuana

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Lawrence LeBlond for
Marijuana screening tests performed on newborns can be contaminated by use of common baby soaps and shampoos that give false-positive results, a new study by researchers at the University of North Carolina, Chapel Hill, has found.
According to the researchers, just a minute amount — 0.1 milliliters or less — of the products found in a urine sample was enough to give the positive result. The results could prove frightening for parents, who, in some states, may have their children taken away because of a false-positive screening.

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