If the pregnancy test paper shows one dark and one light, does it mean that you are pregnant?

Pregnant or not pregnant, one line or two? Pregnancy test sticks have always made women nervous. If the answer is a clear line or two, then it can be distinguished. But what is one deep and one shallow? It can really make worried people scratch their heads against the wall. So let's analyze the reason why the pregnancy test stick shows one dark and one light.

Generally speaking, two obvious green lines on the pregnancy test paper means that the test is positive, which means that you are pregnant. If there is only one green line, it means that HCG is negative, which means you are not pregnant.

What does a pregnancy test strip test for?

The pregnancy test strip tests a hormone called human chorionic gonadotropin, commonly known as HCG, which exists in urine and blood and only appears when pregnancy occurs. The general pregnancy test tools all get the results based on the reaction after the HCG antigen binds to the antigen in the urine.

In a word, the pregnancy test strips detect whether there is HCG in your urine. If there is, it means you are pregnant, because only pregnancy can produce this kind of growth hormone.

So what does it mean when a woman who is preparing for pregnancy finds that the result on the pregnancy test paper shows two lines, one dark and one light?

1) The pregnancy test paper shows one dark and one light result. Most of the time, this happens not long after the early pregnancy because the pregnancy time is short. As the pregnancy progresses, the HCG level in the urine wave increases, and the pregnancy test stick may show two clear bars. It is recommended to use the pregnancy test stick 7-10 days after the menstruation is delayed. At this time, the HCG concentration in women's urine is the highest, and the results obtained are usually more accurate. However, there is still no way to be sure that if the pregnancy test paper shows one dark and one light, you are definitely pregnant. In this case, you need to collect morning urine and test again every two days with a new pregnancy test strip.

2) Incomplete development of test tube embryos will cause a decrease in the HCG level in the urine, causing the pregnancy test stick to show one dark and one light. In this case, the absolute value of growth hormone in the blood should be measured immediately to judge the quality of the test tube embryos.