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November 4th, 2006, 04:31 PM
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alexa alexa is offline
Mega Super Mommy
Join Date: Jan 2006
Location: Las Vegas
Posts: 2,582
You should always see two lines on the OPK because there is always LH in your system. What makes it positive is when your LH surges around O because your body is trying to release the egg. It is only positive when the test line is as dark as or darker than the control line.

HCG which is the pregnancy hormone also mimics LH, so when you are a ways a long in pregnancy, an OPK would show positive all the time because of your elevated HCG levels.

Peeonastick.com has some info on using OPK's as HPT's. An Hpt will detect pregnancy much quicker.
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