Why children are put in placement by DYFS,and family steps in do they drug test the family member

While I am not completely clear on your answer, from what I understand children are placed by the Division of Child Protection and Permanency (formerly DYFS) when the parent or parents have acted in a manner that has been abusive or negligent of the children's needs. The Division will usually try to place the children with family members where possible, however, they will also need to do background checks against any family member that they may place the child with. This could include drug testing if there is any indication that the family member may have had a history or problem with drugs or even if there were any unsubstantiated reports. Prior arrests or involvement with DYFS can also be a reason to ask for drug tests.