Establishing paternity in Iowa

by Gina
(Davenport, Ia)

My son's wife had a child with another man over a year ago. They (son and wife) are trying to get divorced in Iowa but we need to establish paternity first according to our lawyer. How do we go about having the baby tested? Who else needs DNA checked? My son (who's presumed the father since they are still married)? The babie's father? Both? Where do we start in Iowa? We were told CSR would need to help establish paternity before the divorce could be started.