What is the reason for the pregnancy test stick to be invalid?

Some friends found that the result of the pregnancy test stick showed that there was nothing when using it. This situation is actually an invalid display. The reason may be related to their own measurement method, or the pregnancy test stick may have exceeded the usage time. If the pregnancy test stick shows invalid, you can use a new pregnancy test stick to test again according to the steps.

What is the reason why the pregnancy test stick is invalid?

1. If you use a pregnancy test stick to test a woman's urine, if two red bars appear, it means that conception is successful. If only one red bar appears, it means that you are not pregnant. However, there is also a situation where it does not show anything, which means the measurement is invalid. The reason for this situation is most likely that the measurement method is incorrect, or the pregnancy test stick has exceeded its expiration date. You can buy another one and continue testing the next day.

2. When using a pregnancy test stick, be sure to gently tear open the package along the notch before use. Before use, women should wear disposable examination gloves, use their thumb and index finger to hold one end of the handle of the pregnancy test stick, tilt the urine suction hole downward, hold it for one or two seconds and then take it out. The pregnancy test result can be read after one minute. If this time is exceeded, it will be invalid.

3. If the pregnancy time is relatively short, the pregnancy test stick will show a red bar and the other bar will be light pink during the test. This also means that there are symptoms of pregnancy. After that, you need to go to the hospital and use B-ultrasound to rule out ectopic pregnancy. At the same time, you should take folic acid tablets orally in time to prevent congenital malformations that may occur in the baby.

How to use pregnancy test stick

1. Tear open the aluminum foil bag along the notch and take out the pregnancy test stick when using.

2. Put on the disposable plastic film gloves included in the box, hold one end of the handle of the pregnancy test stick tightly with your thumb, and tilt the end with the urine suction hole downward. Note that the observation side of the pregnancy test stick should face downward and the plum blossom pattern should face upward.

3. Urine towards the urine suction hole on the side of the pregnancy test stick, allow the urine to pass through the urine suction hole, and maintain the urine collection time for 1 to 2 seconds.

4. Then turn the pregnancy test stick over so that the observation window is facing upwards, and continue to hold the pregnancy test stick at an angle. When you see purple-red liquid crawling across the observation window, purple-red lines will appear on the observation window within 1 minute. The pregnancy result can be read after 1 minute, and the non-pregnancy result must be confirmed after 3 minutes. The result read after 5 minutes is invalid! Urine samples at any time are suitable for pregnancy test sticks. If you are in early pregnancy, morning urine is best.

The pregnancy test stick is determined by measuring HCG in urine. HCG actually starts to be secreted in large quantities after the fertilized egg implants. The syncytial trophoblast begins to secrete large amounts of HCG, and it takes at least 11 days for the fertilized egg to implant. If you want to test more accurately with a pregnancy test stick, wait 11 days before using the pregnancy test stick to test whether you are pregnant.

Warm reminder: The pregnancy test stick is not 100% accurate and correct. To ensure accuracy, experts recommend going to a regular hospital for early pregnancy tests.