“…A reduced scrum level of progesterone and a reduced excretion of pregnanediol and oestrogen have been reported [8,14]. The most commonly reported abnorm ality has been an elevated excretion of gonadotrophins [5,8,12,14,17], but the significance of this finding is unknown. In our cases the excretion of chorionic gonadotrophin was within the range of normal [13,21].…”