What does the C and T on a pregnancy test stick mean?

Many women will find C and T marks on the pregnancy test stick when using it. So what do the C and T on the pregnancy test stick mean? Why is the C line darker than the T line on a pregnancy test stick? Let’s learn about it together below!

What do the C and T on the pregnancy test stick mean?

"C" expresses contrast line

"T" represents the test line, C always shows one line, and t also has a green line to prove that it is pregnant. If the color is as dark as C, it is confirmed, and the color is light, it is doubtful or in the early stage! Take advice if it helps you!

1. C deep and T shallow: reasonable

If the pregnancy test stick shows a bright red line in the C zone, but the T zone is very light, even so light that it cannot be seen without paying attention, this result is reasonable.

2. c has no color and t is light: invalid

If the C zone of the pregnancy test stick shows no color, and the T zone is very light, so light that it is almost invisible without paying attention, then this result is invalid.

Why is the C on the pregnancy test stick dark and the T on the light?

A dark T line and a shallow C line on the pregnancy test stick indicate a weak positive, which means that you may be pregnant, but you may not be pregnant. There are many reasons for a weak positive on the pregnancy test stick, mainly because the standards are not very perfect and the test results are not very certain.

The most important reason why the T line is dark and the C line is shallow for the pregnancy test stick may be that the HCG value in early pregnancy is very low. HCG will appear in the urine a few days after pregnancy, but at the beginning it is not easy to be detected because of the small amount. It will not become obvious until about half a month later, and during this period the pregnancy test stick may be weakly positive. A weak positive result on the pregnancy test stick may just be an illusion, so don't judge whether you are pregnant after using the pregnancy test stick. It is best to go to the hospital for a check-up to confirm.

In addition, it should be made clear that this test is not suitable after 3 months of pregnancy. HGG begins to be secreted 10-14 days after pregnancy and reaches its peak at 60-70 days. After 3 months of pregnancy, the HGG in the pregnant woman's body will gradually decrease, and sometimes negative or weak positive results will appear in urine tests.

Therefore, if female friends use a pregnancy test stick to detect that T is dark and C is shallow, it is recommended to do another test in a few days. Of course, the most reliable way is to go to the hospital for a comprehensive examination in time, especially for those with weak positive results, which may also be ectopic pregnancy, hydatidiform mole, choriocarcinoma, etc.