it is concluded that urinary excretion of 16 alpha-hydroxydehydroepiandrosterone sulphate greater than 50 mumol/day or a ratio of urinary 16 alpha-hydroxydehydroepiandrosterone sulphate to urinary oestrogen greater than 2.0 correctly identifies , before delivery , those pregnancies in which fetus and placenta are deficient in steroid sulphatase activity .
C0014939
oestrogen
C0032961
pregnancies