Picture of one dark and one light pregnancy test stick_Diagram of one dark and one light pregnancy test stick_Diagram of one horizontal and one vertical pregnancy test stick

There are many possibilities for one dark and one light line on the pregnancy test stick. One is that you may have been pregnant, but because the menstruation was delayed for a short time after intercourse and the estrogen level in the body was not very high, the test result is not very accurate. It is recommended to wait for about 10 days to test again, or you can consider going to a regular hospital for further examination in time to confirm the diagnosis.

It is also possible that something went wrong during the test, such as not using the morning urine test, drinking too much water and beverages in the morning, or the urine being tested being accidentally contaminated by the environment. It is possible that one dark and one light color will appear on the pregnancy test stick. It is recommended to use the morning urine test, and prepare multiple pregnancy test sticks in advance for multiple tests.

Testing in the early stages of pregnancy: High sensitivity, that is, it can be detected two days after the sperm and egg combine in the uterus and the embryo implants, which is about 7 days before the next menstrual period.

Accuracy: High accuracy, because it uses double-layer ultra-sealed aluminum foil packaging to ensure that the product will not get damp for a long time. Even the product stored for 2 to 3 years still has a good quality level.

Response: Information results can be displayed within 1 minute, and as fast as 30 seconds. You don't have to wait for a long time and can find out whether you are pregnant more quickly.

Result: The cloning technology is used, the processing technology is delicate, and the lines showing the results are clearer and more prominent.

The accuracy of a reliable pregnancy test stick is around 85% to 95%.

First of all, we need to clarify some issues: the ovulation period is around the 14th day of the menstrual cycle. If fertilization is successful at this time, it will take 6 or 7 days for the combination of sperm and egg to produce HCG, and the pregnancy test sticks are all determined by testing urine HCG. HCG actually starts to secrete in large quantities after the fertilized egg implants, and the transformed trophoblasts begin to secrete and produce HCG in large quantities. It takes at least 11 days for the fertilized egg and embryo to implant.

Therefore, for the first 6 days, if you want to be more precise, wait until 11 days, then it will be more accurate. You can infer it yourself.

The result of pregnancy (positive type) can be judged after 1 minute (30 seconds at the fastest), which means that if two lines are clearly displayed after 1 minute of the test, it shows the result of pregnancy (positive type) and there is no need to wait until 3 minutes later to judge.

The result of not being pregnant can only be confirmed after 3 minutes. This is because in the early stages of pregnancy, the HCG hormone content in the urine is very low, and a weak positive result may appear during the test. The weak positive result may not be displayed after 1 minute. With the increase in the reaction speed, it will take 3 minutes for two lines to be displayed. At this time, the appearance of two lines should still be judged as a pregnancy (positive) result; if there is still only one comparison line after 3 minutes, it can be judged as a not being pregnant (negative) result.

The result judged after 5 minutes is invalid! This is because the judgment within 5 minutes is the test basis for product design. The result of judgment beyond 5 minutes or even longer is not clear. Some people may have a positive result, but this result does not mean the specific situation.