Abstract
Abnormally low human placental lactogen (HPL) or high alpha fetoprotein (AFP) levels in maternal serum are unfavorable prognostic signs in women with threatened abortion but normal levels cannot be used to discriminate between viable and nonviable pregnancies. Out of 112 women with threatened abortion, 69 aborted; of these, 36 had a low HPL level and they all aborted. Five women had an increased AFP concentration. Four of these aborted and the remaining case was a twin pregnancy in which one fetus died and the other survived. HPL and AFP levels provide complementary information as to the fetal outcome in threatened abortion. This was indicated by a normal HPL level in all of the five cases with raised maternal AFP, and by a normal AFP level in 35 of the 36 women with low maternal HPL.
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