Can pregnancy test sticks go wrong? The chance is relatively small

Many people think that pregnancy test sticks are relatively easy to use, but some people worry about whether the pregnancy test sticks will make mistakes. The pregnancy test sticks can make mistakes, but the probability is relatively small. If you are worried about mistakes, go to the hospital for testing.

To check whether you are pregnant, if you go to the hospital, sometimes in addition to urine tests, they will also use pregnancy test sticks. As long as the products you buy are not counterfeit or inferior, the chance of making a mistake is small.

However, your body may sometimes "deceive" you and result in false positives or false negatives. It is best to go to the hospital for a blood hCG quantitative test.

In general, the accuracy of pregnancy test sticks is quite high. It is also used to check the HCG concentration in urine. Generally, it can be detected normally two weeks after sexual intercourse. Pregnancy test sticks are only a preliminary test, and their accuracy is definitely not as accurate as urine or blood tests.

Pregnancy test sticks use morning urine for testing, and the so-called urine test is to use the hCG contained in urine for testing. Human chorionic gonadotropin (hCG) is a hormone secreted by pregnant women; this hormone exists in urine and blood. General pregnancy test kits use the reaction of single and multiple HCG antibodies in the device binding to antigens in urine to determine whether the pregnancy is present.

Pregnancy test sticks are simple to use, react quickly, and produce clearer and more accurate results. They are now the basic test tool for most women to test for pregnancy.

The accuracy of regular brand pregnancy test sticks is about 85% to 95%...

First of all, we need to clarify some issues: ovulation occurs around the 14th day of the menstrual cycle. Assuming that fertilization is successful at this time, it will take at least 6 or 7 days for the fertilized egg to produce HCG, and pregnancy test sticks are all determined by measuring urine HCG. HCG really starts to be secreted in large quantities after the fertilized egg implants, and the syncytial trophoblast begins to secrete and produce a large amount of HCG. It takes at least 11 days for the fertilized egg to implant.

So, the earliest is 6 days. If you want to be more accurate, wait until 11 days later, when it will be more accurate. You can make your own guess.

The pregnancy (positive) result can be read after 1 minute (30 seconds at the fastest), which means that if two lines are clearly shown after 1 minute of testing, it indicates a pregnancy (positive) result and there is no need to wait for 3 minutes before reading.

The result of not being pregnant must 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 weakly positive result may appear during the test. The weakly positive result may not be displayed after 1 minute. As the reaction time increases, it will take 3 minutes for two lines to appear. At this time, the appearance of two lines should still be interpreted as a pregnancy (positive) result. If there is still only one control line after 3 minutes, it can be judged as a not being pregnant (negative) result.

The results judged after 5 minutes are invalid! This is because the results judged within 5 minutes are used as the experimental basis for designing products. The results judged after more than 5 minutes or even longer are not clear. Some people may have false positive results, and this result does not represent the actual situation.

1. Tear open the aluminum foil bag along the notch before use and take out the pregnancy test stick;

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 of the urine suction hole downward. Note that the observation side of the pregnancy test stick should face downward, and the plum blossom pattern direction should face upward;

3. Aim at the urine-absorbing hole on the side of the pregnancy test stick and urinate, allowing the urine to pass through the urine-absorbing hole, and maintain the urine collection time for 1 to 2 seconds (please note that urine should not wet the observation window when collecting urine! Otherwise, the pregnancy test stick will become invalid);

4. Then turn the pregnancy test stick over with the observation window 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 determined after 1 minute, and the non-pregnancy result must be determined after 3 minutes. The result determined after 5 minutes is invalid! Urine samples at any time are suitable for pregnancy test sticks. If you are in the early stages of pregnancy, morning urine is the best.