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The efficiency of some placental tests in the course of multiple pregnancies.

Total estrogens (E/day) pregnanediol (P/day) in diurnal urine and hemostable alkaline phosphatase (APt) were studied in the blood serum of 20 women with multiple pregnancy. Amnioscope examination was performed during the pregnancy and at the onset of labor. The outcome of pregnancy was also studied in relation to the placental test values. It was concluded that 1) the level of E/day in multiple pregnancies is of considerable value in diagnosing a threatened fetus 2) amnioscope examination is useful in diagnosing 1 endangered fetus in cases of multiple pregnancy with 2 or more amnia and 3) P/day and APt values vary where there is a threat to the fetus in multiple pregnancy.