Doubling Time and hCG Score for the Early Diagnosis of Ectopic Pregnancy in Asymptomatic Women

In a group of 20 asymptomatic women at increased risk for ectopic pregnancy, serum analyses were conducted prospectively early in pregnancy (amenorrhea ≤45 days) at 2-4-day intervals, to examine the rate of increase in hCG values. The initial serum hCG level, which was determined at the time of the...

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