Deficiency of human placental lactogen in an otherwise normal pregnancy

Abstract
WE report a further case of human placental lactogen (HPL) deficiency associated with a normal pregnancy. To our knowledge, this is the first case reported from Italy and the fifth in the literature (Gaede et al., 1978; Nielsen et al., 1979; Moshirpur et al., 1981; Borody and Carlton, 1981).