How long can I be pregnant with a test strip?

If a female friend is pregnant, she can use an early pregnancy test to test whether she is pregnant. The early pregnancy test can detect whether she is pregnant very well. This method is now very popular. When a woman is pregnant, there will be some symptoms, such as cessation of menstruation, drowsiness, and loss of appetite. You must be alert to whether you are pregnant. So how long does it take to detect pregnancy with a test strip? Let's take a look at the introduction below.

Early pregnancy test strips are a good way to detect whether you are pregnant. This method is also very simple and convenient for female friends. However, when using early pregnancy test strips, you must grasp the correct time and have a better understanding of how long it takes to detect pregnancy with the test strips.

Detection time

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The working principle of self-testing pregnancy using early pregnancy test strips is to detect the HCG value, that is, the value of human chorionic gonadotropin. This hormone is produced by the placenta and usually appears in the urine a few days after pregnancy. However, due to the small amount, it is difficult to test it at the beginning and it becomes increasingly obvious after 10 to 14 days. (HCG values ​​can also be measured through blood tests, which are much more accurate). Neither too early nor too late will have good results.

How long does it take for an early pregnancy test to show results?

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It is generally recommended to use the first urine test in the morning for women who have just become pregnant, as the results are more accurate. But for women who have been pregnant for some time, urine from any time of the day can be used for testing.

How long does it take for an early pregnancy test to show results?

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It usually takes about 7 days from intercourse to pregnancy, which means that pregnancy can be tested on the day of pregnancy (equivalent to 7 days after intercourse).

How long does it take for an early pregnancy test to show results?

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Test results

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Negative: A purple-red line appears in the test area (control line C), indicating no pregnancy.

2

Positive: Two purple-red lines appear in the test area (control line C and test line T), indicating pregnancy. The color intensity of the test line at different stages of pregnancy changes with the change of HCG concentration.

3

Invalid: No purple-red line appears in the test area or only one purple-red line (test line T line) appears in the test area, indicating that the test has failed or the test paper is invalid and should be retested.

Precautions

Dilute urine. Drinking too much water can dilute your urine and cause a false-negative result.

Performing the test in the morning or evening may have some effect on the results. The highest HCG value is generally found in morning urine, so many instructions recommend testing in the morning, but this is not absolute.

When testing, pay attention to the length of the test paper that is immersed in urine. Sometimes the length of urine that covers the test strip is too long, making the test result difficult to interpret.

Do not rely on test results to determine whether you are pregnant if you have recently been pregnant. Because HCG can remain positive for a long period of time after termination of pregnancy (after delivery, spontaneous abortion and artificial abortion).

Some illnesses and medications can cause false-positive results. Some tumor cells, such as hydatidiform mole, choriocarcinoma, bronchial carcinoma and renal cancer, can also secrete HCG.

Do not use expired test strips. Because chemical reagents lose their effectiveness over time, pay attention to the production date when purchasing.

Everyone should know how long it takes to detect pregnancy with a test strip. If a female friend suspects that she is pregnant and wants to use a test strip to test, she should wait 7 days after her period is delayed so that the accuracy rate will be higher. She also needs to understand the correct way to use the test strip and use qualified test strips, which will not affect the test results.