Is this pregnancy viable?
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Measure serum progesterone levels of women with bleeding or pain and inconclusive ultrasound in early pregnancy to rule out viability, potentially eliminating the need for serial b-hormone human chorionic gonadotropin (b-hCG) testing. Stength of recommendation: A: Based on a systematic review and meta-analysis of 26 diagnostic accuracy studies.
Journal of Family Practice, 62(6) 2013: 305+.
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