How many days of pregnancy can I detect with a pregnancy test stick

With the development of modern clinical medical technology, there are many ways to detect whether a woman is pregnant. In addition to the more common blood tests, many women also choose to use pregnancy test sticks at home. Because after a woman becomes pregnant, the hcg value in her body will change significantly, so it can be detected by a pregnancy test stick at this time. So how many days into pregnancy can you use a pregnancy test to detect it?

How long does it take to detect pregnancy with a pregnancy test stick? The fastest is 7 days after sex.

Under normal circumstances, women can start using pregnancy test sticks about 7 to 10 days after having sex, but the accuracy of the test at this time is not very high. Pregnancy is determined by testing the HCG concentration in the blood or urine, and the change in these concentrations requires a process. Generally speaking, it can be tested 7 days after fertilization, but the accuracy at this time is relatively low. If you want a high accuracy rate, wait until 11 days, when it will be more accurate.

The working principle of the pregnancy test stick is to detect the HCG value, that is, the value of human chorionic gonadotropin, which is produced by the placenta. Generally, this hormone will be excreted into the urine through the pregnant woman's blood circulation a few days after the woman becomes pregnant. Therefore, the result of the morning urine extraction test is the most accurate, and this method is relatively convenient. If the pregnancy has not been detected in the first few days, it may be because the secretion of this hormone is low. You need to wait a few more days, around the 10th day of pregnancy, then it will be easy to detect.

When testing with a pregnancy test stick, the pregnancy result can be read after 1 minute, that is, two lines are clearly displayed, which is the result of pregnancy. In addition, due to the low HCG hormone content in the urine in the early pregnancy, it may take up to 3 minutes to show the second line to determine whether you are pregnant. The result of not being pregnant must be determined after 3 minutes. If there is still only one control line after 3 minutes, it means you are not pregnant. Results read after 5 minutes will be considered invalid.