The accuracy rate of legitimate brand pregnancy test sticks is about 85% to 95%. Ovulation occurs around the 14th day of the menstrual cycle. Assuming successful fertilization at this time, it takes 6 to 7 days for the fertilized egg to produce HCG, and pregnancy tests are determined by measuring urine HCG. The true start of HCG secretion occurs after the implantation of the fertilized egg, when syncytiotrophoblasts begin to secrete HCG in large quantities. And the implantation of the fertilized egg takes at least 11 days.
There are three key points to pay attention to when choosing a pregnancy test stick, which are to purchase it from a regular pharmacy. There is not much difference between different brands of pregnancy test sticks, and to pay attention to the production date and expiration date of the test stick. Many women want to know how long it takes for a pregnancy test to be detected and when it is most effective to use it. Generally speaking, the correct time to use a pregnancy test stick is 7-10 days after sexual intercourse, and it is best to test urine in the morning. The longer the time after sexual intercourse, the more accurate the test results will be.
So, what do you think of a pregnancy test stick? There are three situations:
1. Not pregnant: Only one control line appears, indicating no pregnancy.
2. Pregnancy: Two lines appear, namely the control line and the detection line, both showing color, and the detection line is clearly visible, indicating pregnancy; If the control line is clearly visible and the detection line appears very light, it may indicate pregnancy. Please collect morning urine with new morning paper every 2 days for retesting.
3. Invalid: If no control line appears within 5 minutes, it indicates that the experiment is invalid or failed.
When the pregnancy test shows "two bars", do not think that you are pregnant and do not proceed with the test. It is important to conduct further confirmation tests. In addition to human chorionic gonadotropin in urine causing the appearance of two bars on the pregnancy test stick, certain tumor cells or moles in women's bodies may also cause the appearance of "two bars" on the pregnancy test stick.
