A known gamete donor (egg, sperm or embryo) or gestational carrier (GC) is a family member, friend, or acquaintance with whom intended parents have a preexisting relationship.  The preparation and assessment involved in these arrangements takes a similar three-part approach as is detailed in the GC section: intended parent counseling; psychological evaluation of the donor/GC and partner, including clinical interview and personality inventory; and group session.  You may find it helpful to review the article, “Choosing a known donor or gestational carrier.”