How Pregnancy Tests Work
All at-home pregnancy tests detect the hCG hormone levels in a woman's urine to determine if she is pregnant.
 Find out how tests work
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Accuracy & Knowing Sooner
What increases the sensitivity of an at-home pregnancy test? What factors can affect a test's accuracy?
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See our Know Six Days Sooner slideshow
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Signs
There are signs of pregnancy that are obvious, and others not so obvious. Knowing all the signs may help you take better care of yourself and your baby earlier.
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Recommended Reading
Additional resources on pregnancy and pregnancy tests.
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