Question: How do dating pregnancy tests work?

How accurate are dating pregnancy tests?

The Weeks Indicator is 93% accurate in telling when you conceived when compared to time since ovulation. A published study comparing dating by Weeks Indicator with ultrasound (11-13 weeks) standard of care found that results agreed 97% of the time*.

Do you add 2 weeks on clearblue?

1 – 2: this means you are pregnant and conceived approximately 1 – 2 weeks ago. 2 – 3: this means you are pregnant and conceived approximately 2 – 3 weeks ago. 3+: this means you are pregnant and conceived more than 3 weeks ago.

How many pregnancy tests should I take?

If you get a negative result and want to be extra sure, take a second test. Just be sure to wait a few days—taking a second test in the same sitting wont give you a different result.

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