For women preparing for pregnancy, after ovulation, they can't wait to know the results of their intercourse. But generally speaking, it is not possible to detect pregnancy after sexual intercourse. To make the pregnancy test results more accurate, one must be patient and wait for a while. So how long can early pregnancy test strips be used to detect pregnancy?
How long can early pregnancy test strips determine pregnancy
To test for pregnancy using early pregnancy test strips, it is recommended to use them 7-10 days after sexual intercourse. But the accuracy is not high enough at this time, and it usually takes 9 days after fertilization to ensure accuracy. Because pregnancy testing is generally determined by measuring the concentration of HCG in the blood or urine, which is the concentration of human chorionic gonadotropin. However, the changes in HCG concentration in the blood and urine after pregnancy go through a process, so the longer the time after sexual intercourse, the more accurate the test will be. In addition, using early pregnancy test strips for pregnancy self testing also has certain deviations, and further diagnosis requires testing at a hospital.
The correct usage of early pregnancy test strips
1. Working principle
The working principle of early pregnancy test strips is to detect HCG values. There are single or multiple HCG antibodies placed inside them. When this antibody binds to HCG antigens in urine, it will show a corresponding reaction, which can be used to determine whether pregnancy is possible.
2. Instructions for use
(1) Drip urine into the detection hole of the early pregnancy test strip;
(2) After waiting for a moment, check the results displayed on the test paper.
3. Result judgment
If it is displayed as negative, that is, if a red line is shown in the control area of the test strip (some test strips display a blue line, please refer to the test strip instructions for specific situations), it indicates pregnancy;
If it is positive, meaning there are no colored lines, it means there is no pregnancy.
In fact, before using early pregnancy test strips to check if a woman is pregnant, it is advisable to observe her physical condition. If symptoms such as amenorrhea, vomiting, and easy fatigue occur, it is very likely that she is pregnant. The above is the content introduced by the editor about how long it takes to test pregnancy with early pregnancy test strips and the correct use of early pregnancy test strips.
