Investigating the controversial practice of drug testing pregnant patients in hospitals

Thousands of pregnant patients across the U.S. are given routine urine drug tests. A joint investigation between "CBS Sunday Morning" and the Marshall Project has found the percentage of false positive results from urine drug tests to be as high as 50% - an error rate that can have devastating consequences. CBS News' Erin Moriarty reports. [This report was produced in partnership with @TheMarshallProject, a nonprofit news organization covering the U.S. criminal justice system.]

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