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Doctors Lounge - Gynecology Answers
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| stella ann
- Tue Nov 01, 2005 8:07 pm |
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Hello, sorry, this may be old news, but not for me. I am 8-9 days late for my period. I have taken two pregnancy tests at home, both negative. I don't have any real reason to believe i am pregnant. Also a few months ago I had pain during sex for a week or so, and again one other time since then. I am making arrangements to see a doctor, but am hoping someone could maybe ease my mind a bit, or give me some ideas on what could be happening to me. Any ideas? thanks
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| Dr. Tamer Fouad
- Sun Jan 08, 2006 7:27 am |
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Hello,
The highest possible screening sensitivity for an hCG-based pregnancy test conducted on the first day of a missed period is 90 percent, as 10 percent of women may not have implanted yet.[1] It was estimated that the highest possible screening sensitivity of a home pregnancy test by one week after the first day of the missed period is 97 percent.
References:
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1. Allen J. Wilcox; Donna Day Baird; David Dunson; Ruth McChesney; Clarice R. Weinberg. Natural Limits of Pregnancy Testing in Relation to the Expected Menstrual Period. JAMA. 2001;286:1759-1761.
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