How soon you can take a pregnancy test will depend on the kind of test you use.
A pregnancy test is essentially a measure of the amount of human chorionic gonadotrophin (hCG) that appears in your body. As a common indicator of pregnancy, home pregnancy tests detect hCG levels in your urine.
However, some tests are more sensitive to hCG than others. The most sensitive ones can detect hCG seven days after conception, or four days before a missed period.
You can see how sensitive your pregnancy test is by looking at the packaging. They range from 10mIU/ml to 40 mIU/ml. Lower numbers indicate more sensitive tests, which means they can detect a pregnancy earlier.
Even if you have a very sensitive test, there can be problems with testing too early. Sometimes, the hCG in your urine might be too low to detect, leading to a false negative. In fact, 1 in 10 women have low levels of hCG during a missed period. So if you get a negative result and still don’t get your period, try again after a few days.
The majority of home pregnancy tests will offer accurate results if used about two weeks after you ovulate (when your period is normally due).
An even more sensitive way to test your hCG levels is by doing a blood test. A blood test can detect a pregnancy as early as six days after ovulation.
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