The error rate of Xiuer's early pregnancy

Although early pregnancy test strips can accurately measure whether a woman is pregnant, early pregnancy test strips still have errors. Some women drink a lot of water before using early pregnancy test strips, which may affect the results of early pregnancy test strips. So what is the error rate of early pregnancy test strips?

What is the error rate of early pregnancy test strips?

Everyone is familiar with early pregnancy test strips. Many women of childbearing age will prepare some at home so that they can test whether they are pregnant anytime and anywhere after the menstrual period ends. But sometimes the test results cannot indicate whether you are pregnant or not, so people may doubt the accuracy of the early pregnancy test paper. So they want to know whether the early pregnancy test paper will be wrong? The main content is as follows:

This early pregnancy test paper is generally more accurate, but it is also 100% normal. Because the quality of some early pregnancy test strips is not good, and incorrect operation methods will cause incorrect test results. Therefore, if the menstrual cycle is delayed for more than a week, you can use an early pregnancy test to check. If the result cannot indicate whether you are pregnant, it is recommended to go to the hospital as soon as possible for relevant examinations and hcg tests to find out whether you are pregnant.

What are the reasons for false positives in early pregnancy tests?

Pregnancy test strips are a relatively effective way to assist clinical medicine in determining pregnancy, but care must be taken to avoid false positives.

HCG usually appears in the urine a few days after the embryo implants, and it must reach a certain amount to be detected. Therefore, for women with normal menstruation, HCG can only be detected in the urine after the menstruation is delayed. Women with long menstrual cycles or abnormal ovulation can only be detected after 40-44 days of amenorrhea. Drinking too much water may dilute the urine and cause a false negative result.

Performing experiments in the morning and at night may have some 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. During the test, pay attention to the length of the pregnancy test paper that is immersed in urine. Sometimes the length of time that urine soaks into the test strip is too long to make the test result indistinguishable. Do not rely on test results to determine whether you are pregnant if you have recently experienced pregnancy. Because HCG can continue to be positive for a long time after the termination of pregnancy (after childbirth, spontaneous abortion and artificial abortion).

Some medical conditions and medicines may cause a positive result. Some tumor somatic cells, such as hydatidiform mole, choriocarcinoma, bronchial carcinoma and renal cancer, can also metabolize HCG.