What is the accuracy of pregnancy test sticks?

Generally speaking, the accuracy of pregnancy test sticks from reliable and well-known brands is around 85% to 95%. Therefore, pregnancy test sticks are not 100% accurate. Don’t say that one dark and one light line on the pregnancy test stick does not mean that you are pregnant. Even if two lines are detected, sometimes it does not necessarily mean that you are pregnant. If you want to confirm whether you are really pregnant, you should go to the hospital for more accurate examination.

The factors that affect the accuracy of pregnancy test sticks mainly include improper operation, too short a pregnancy period, taking medicines that affect the results before testing, expiration or moisture of the test products, etc. These can all cause inaccurate results of pregnancy test sticks. In order to improve the accuracy of the pregnancy test stick, pay attention to the following when using the pregnancy test stick:

1. Pay attention to the production date on the gift box and do not use expired early pregnancy test strips, because organic chemicals will be invalid if they are used for a long time or stored improperly.

2. Read the instructions carefully before doing the test, and then operate according to the instructions carefully.

3. The pregnancy test stick is generally more accurate if checked 7 days after the menstrual period. Because it is related to the HCG in the body, it can only be significantly measured when the HCG reaches a certain level, so it is best to use it 7 days after the menstruation is delayed.

4. If pregnancy has just begun, or there is a possibility of ectopic pregnancy, the body's HCG level is generally slightly low. The test sample needs to be left alone for more than 3 minutes (usually only 1 minute), and careful analysis must be made to see if there is a weak positive. The test area is only faintly visible.

If the pregnancy test stick is not damaged or wet within its validity period, its accuracy can reach over 90%. The pregnancy test stick can only detect whether you are pregnant after the menstrual period exceeds the normal physiological cycle by 7-10 days. In the case of late embryo implantation during normal sexual intercourse, it is necessary to wait for more than 10 days after the normal menstruation before the test can be conducted.