Can a hospital be held accountable for mixing test results and passing on the wrong results to a second party?

My wife had a baby recently (our 5th child and 2nd born at this hospital) and because of my daughters lungs not being fully developed, The hospital kept her longer then usual until before releasing her. While my daughter was in the hospital my wife was called by a Social service case worker from the hospital, Notifying her that our daughters umbilical cord tested positive for Cannabis and that the case worker was going to let child protective service know. My wife asked the case work what was our daughters date of birth and the case worker didn''t know, nor the first name of the baby, She just knew the last name and told my wife it had be tested twice. My wife was very upset because I and my wife are practicing muslims and have been for over 20 years. So we are not in the company of people who do it nor do we do indulge in it ourselves, After my wife begged her to check it again, the case worked agreed and then called back saying it was a mistake and the system at the hospital is new.