The pregnancy test stick is a recommended tool used by many mature women to check if they are pregnant. The emergence of the pregnancy test stick has made it convenient for many women who have failed contraception or are expecting pregnancy to make early judgments about their pregnancy status. The principle of the pregnancy test stick is to detect chorionic gonadotropin to determine whether they are pregnant. When it appears, there are one or two bars. So, will the pregnancy test stick have two bars if left for too long?
Will the pregnancy test stick have two bars if left for too long
1. The pregnancy test stick should be tested according to the detailed operation method. The product manual of the pregnancy test stick clearly indicates that the interpretation result of the pregnancy test stick is considered invalid after 5 minutes. This is the experimental basis and conclusion of the product design.
2. On the other hand, some people may have false positive results, so the result of the pregnancy test stick turning into two bars after being left for a long time does not represent the actual pregnancy situation.
Is the pregnancy test stick always accurate
1. If the pregnancy test stick has not expired, there is also a routine error of false positives or false negatives, which is related to the fact that the pregnancy test stick is a fast and convenient self checking method.
2. Due to the fact that pregnancy testing requires the measurement of HCG in urine, which is determined through the biochemical detection of color changes on the pregnancy test stick, it is susceptible to environmental factors such as physical errors, temperature, and humidity.
Although the emergence of pregnancy test sticks has greatly facilitated women's pregnancy testing, sometimes there may be uncertainty in the test results due to errors or the quality and effectiveness of the pregnancy test sticks. So, if there are no errors during the preparation for pregnancy, and the pregnancy test stick repeatedly shows negative results, or if there are unexpected situations where two bars appear, you can also go to the hospital to do some other related tests, without wasting your energy and time.
