How many days does it take to detect pregnancy using early pregnancy test paper

The principle of using early pregnancy test strips for pregnancy testing is to test the hCG value, that is, the value of hCG gonadotropin in the body. This type of growth hormone is produced by the embryo and usually appears in the urine a few days after pregnancy. However, due to the small amount, it is not easy to test it at the beginning, and it becomes increasingly obvious after 10-14 months.

2. For women who are pregnant soon, it is generally recommended to test the first urine in the morning as the result is more accurate. But for women who have been pregnant for some time, urine at any time of the day can be used for testing.

3. It usually takes about 7 days from intercourse to pregnancy. In other words, you can test whether you are pregnant on the day of pregnancy (equivalent to 7 days after intercourse), but the accuracy is not high. Generally, the test results will be more accurate if you test again 14 days after intercourse.

Commonly asked questions about using early pregnancy test strips

1. Diluted fluid in urine. Drinking too much water may dilute the urine and cause a false negative result.

2. Conducting experiments in the morning and at night may have a certain impact on the results. The highest HCG value is usually found in the urine in the morning, so many instructions recommend testing it when you wake up in the morning, but this is not certain.

3. During the test, pay attention to the length of urine that penetrates the test paper. Sometimes the length of time that urine soaks into the test strip is too long to make the test result indistinguishable.

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

5. Some diseases and medicines may lead to positive results. Some tumor somatic cells, such as hydatidiform mole, choriocarcinoma, bronchial carcinoma and renal carcinoma, can also metabolize hCG.

6. Do not use expired test papers. Since chemicals lose their effectiveness over time, pay attention to the production time when purchasing.

7. Do not use test paper that has become damp.