To : Laurie Re : Drugs of Abuse and breastfeeding I seem to get this same question often from my local agencies. I generally believe that if the mom wishes to breastfeed and will submit to ocassional drug screens, that it is fine for her to breastfeed as long as she is not HIV positive and does not use IV drugs. She should be reminded, that drugs of abuse do pass into milk, and will stay in her infants body much longer than in hers. For instance, after using cocaine she will probably be drug screen positive for 2-3 days, whereas her infant could be drug screen positive for 7-14 days. Marijuana may stay in an infant for up to a month or longer, slowly leaking out of the fat tissue to the urine. So warn her that there is no way for her to escape detection, because we can detect the drugs for long periods in her infants urine. Regards Tom Hale, Ph.D.