When to use pregnancy test paper

Many young married people expect to have a baby like others, and many friends do not want premature pregnancy to affect their world of two, but they feel embarrassed to go to the hospital for examination. Then pregnancy test strips came into being. Many female friends choose to use pregnancy test strips to check whether they are pregnant. Then, when and how to use pregnancy test strips are issues that many female friends are more concerned about. At the same time, correctly checking whether you are pregnant is also a focus of women.

Can pregnancy test strips accurately detect whether you are pregnant? And when should you use it? Many female friends who want to get pregnant buy pregnancy test strips and use them themselves. Although the accuracy rate of pregnancy test strips has reached 99%, you still need to pay attention to that 1%.

In fact, although early pregnancy test strips are said to have a 99% accuracy rate, you must not overly trust your self-test results. According to expert statistics, the accuracy of early pregnancy test strips varies greatly, ranging from 50-98%.

Why is there such a big difference? Gynecologists point out that when women do self-tests for pregnancy at home without any external guidance, the test results are generally only 50-75% accurate. If this test is done in a laboratory in the presence of a doctor who can ensure that the test strips are working properly and the woman can use the test strips correctly according to the instructions, the test accuracy may be close to 100%.

The manufacturers of early pregnancy test strips and ovulation self-test mirrors claim: "In the laboratory, it has been confirmed that today's early pregnancy test strips are accurate up to 99%. However, when women use early pregnancy test strips, they must remember to follow the instructions meticulously to ensure that the test results are correct and reliable." However, in actual operation, it is not easy to use them correctly according to the instructions.

The instructions of some early pregnancy test strips read: "Urine towards one end of the self-test card with the absorbent tip facing downwards. Do not let the display window face your body to avoid splashing urine on it." Some early pregnancy test strips instruct users to "hold the urine burette and drop 3 drops of urine 3 cm above the urine dish at the bottom of the test strip." If you read the details of these instructions carefully several times and think them over again and again, there will probably be no problem. However, for a woman who is nervous and panicked because of the fear of pregnancy, mistakes are inevitable because she cannot calmly and patiently follow the instructions. Moreover, the test results are very confusing. Both the color reaction and the line reaction are difficult to explain.

In addition, there are other obstacles to obtaining accurate test results. Like professional medical tests, pregnancy self-tests work by detecting the HCG value, which 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 does not become increasingly obvious until 10-14 days later. (HCG values ​​can also be measured through blood tests, which are much more accurate). Although many types of early pregnancy test strips indicate that women can do a pregnancy self-test one day after missing their normal menstrual period, in fact, not all pregnant women emit HCG hormones at the same speed and in the same amount. This varies from person to person. "If you do a urine test too early, a negative result may be wrong," said an obstetrician and gynecologist. Therefore, it is best to do a pregnancy self-test two weeks after your period is late, so that the result will be more reliable.

If you do a pregnancy self-test at night, the accuracy will be affected to a greater or lesser extent. Because early morning urine generally has the highest HCG value. Many pregnancy tests do not indicate the best time of day to take the test. Generally speaking, the most accurate result will be obtained using the first urine excreted in the morning. Although a positive result is not as misdiagnosed as a negative result, there are many non-pregnancy factors that can cause a positive test result: blood in the urine, recent pregnancy (HCG hormone can be found after miscarriage, abortion or 8 weeks after giving birth), ovarian tumors and other diseases, or taking some fertility drugs.

The above is a brief introduction to the time period when pregnancy test strips should be used for more accuracy. You should choose to test early in the morning urine, and do not perform urine pregnancy tests at night. The accuracy rate of such tests will also be very inaccurate. Female friends must read the instructions of pregnancy test strips accurately when they buy them, and do not abuse them casually. Such erroneous results will also bring many adverse factors to individuals and families. It is more accurate to choose regular pregnancy test strips to check whether you are pregnant.