We use the Edinburgh screen and give it day one PP. When complete we go over an info sheet with "baby blues", how to stay healthy, etc. etc. attached is info on our group "time for mom" which meets once a week. Now if score is 12 or > or they answer with a number on question # 10 ( about harming yourself) we have a Behavioral Health staff member meet with the mom in the hospital.
Where I practice it is state mandated that this be done.