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Correction to Carson and Buster, N Engl J Med 329(16):1174-1181 October 14, 1993.

Correspondence
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Volume 330:712-714 March 10, 1994 Number 10
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Ectopic Pregnancy

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by Carson, S. A.
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by Carson, S. A.
To the Editor: In their review of ectopic pregnancy (Oct. 14 issue),1 Carson and Buster propose an algorithm for early diagnosis based on progesterone measurement. In many areas of the country, including our own, progesterone measurement is not available either daily or during initial assessment. This limits the usefulness of the test as a starting point for the routine diagnosis of ectopic pregnancy.

Abnormal serum progesterone levels or serial values for the beta subunit of human chorionic gonadotropin ({beta}-hCG) are not specific to ectopic pregnancy. According to the data of Stovall and Ling,2 only 24 percent of patients with . . . [Full Text of this Article]

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