The pregnancy test stick shows one dark line and one light line

Pregnancy test sticks are used to test whether a woman is pregnant. Women can check one week after the menstruation is delayed to see if they are pregnant. Pregnancy test sticks are a very good testing method. Of course, different pregnancy test sticks are also different. So, why is one line darker than the other on the pregnancy test stick?

Why is there one dark line and one light line on the pregnancy test stick?

The pregnancy test stick can be tested on the 7th day after ovulation. After the embryo implants, HCG begins to be secreted in large quantities. The detection principle of the pregnancy test stick is to detect the HCG component in the urine. 7 days is the initial time. Generally speaking, if you want to be more precise, wait for 10 days, which will be more accurate. Proper use of ovulation test strips will result in the following situations:

1. Only one comparison line appears on the pregnancy test stick: It means you are not pregnant - I'm sorry, please be more diligent next time.

2. Two lines appear on the pregnancy test stick, that is, the comparison line and the detection line are both colored, and the detection line is obvious and clear: it means that you are already pregnant - congratulations, you have become a pregnant mother.

3. No contrast line appears on the pregnancy test stick within 5 minutes: It means the experiment is invalid or unsuccessful - what airports are involved? Please read the instruction manual carefully.

Pregnancy test sticks are currently a very simple and convenient method of pregnancy testing. Many women use pregnancy test sticks to test their pregnancy and then go to the hospital for official verification. Generally speaking, the success rate of pregnancy test sticks from reliable and well-known brands is around 85% to 95%, and can only provide the above 3 test results. However, during the operation, many women still have questions, such as: the situation where the pregnancy test stick is one dark and one light.

The pregnancy test stick may be dark and light due to external reasons. There are four reasons:

1. In the early stages of pregnancy, HCG is slightly low. In the early stages of pregnancy, the body's HCG level is generally slightly low, and the test area is only faintly visible, which can also cause the pregnancy test stick to have one dark and one light color. At this time, it is recommended to test it with morning urine the next day. If the comparison line turns dark brown, then congratulations, you are a pregnant mother.

2. The urine concentration is too low. Pregnant women in the early stages of pregnancy said that their test results were positive in the morning, but turned weakly positive at noon, which confused them. This situation is probably due to low urine concentration. The correct recommendation for using pregnancy test strips is to try to use the first urine in the morning for testing, because female hormones are most easily detected at this time. If there is really no urine in the morning or if you drank too much water last night, you must at least ensure that the urine is in the bladder for at least four hours before testing. Otherwise, it is easy to cause the pregnancy test paper to be dark and light.

3. The pregnancy test stick is particularly sensitive. During ovulation, women's HCG and LH will reach a peak, and will return to normal levels after ovulation. However, before the next menstruation, these two levels will rise a little. If the pregnancy test stick used is particularly sensitive, it will easily show a faint detection line. This kind of "why don't you know" situation happens quite often. Many netizens have reported that using Xiuer pregnancy test sticks is relatively sensitive and they may get disappointed if they are not careful. It is recommended to use Peter's ovulation test strips.