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Specific Findings

Ectopic Pregnancy: Sensitivity and Specificity

Introduction: See Pregnancy for beta-hCG diagnostic test accuracies.

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Population / CalculatorPrevalence Comments / Study / Link
Pregnancies 2%
Women presenting to ED with first trimester bleeding, pain, or both 12% 6-16%

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The sensitivity and specificity of findings for Ectopic Pregnancy are listed below. See the left navigation bar to change the display.

Specific Findings

Finding SensitivitySpecificity Comments, Study
Trans-Vaginal Ultrasound Edit 74%100%

spec = 99.9%. Diagnostic criteria included sonographic evidence of an empty intrauterine cavity and adnexal mass and/or extrauterine gestational sac. For all patients where the diagnosis was "pregnancy of unknown location", ectopic pregnancy was later confirmed

Study: Hum Reprod. 2007 Nov;22(11):2824-8. PMID 17855406