Commonly used baby soaps and shampoos, including products from Johnson & Johnson, Aveeno and CVS, can trigger a positive result on newborns' marijuana screening tests, according to a recent study. A minute amount of the cleansing products in a urine sample — just 0.1 milliliters or less — was found to cause a positive result.
Researchers at the University of North Carolina, Chapel Hill, began studying the issue after an unusually high number of newborns in their nursery began testing positive for marijuana exposure. Newborn screening for marijuana at hospitals, particularly among babies of women who are considered at high risk of drug use, is not uncommon: at U.N.C. Chapel Hill, 10% to 40% of newborns are tested.
Positive results can precipitate an investigation by child welfare authorities. "We really did this to help protect families from being falsely accused," study co-author Dr. Carl Seashore, a pediatrician in the U.N.C. Chapel Hill newborn nursery, told My Health News Daily. Read more
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