Beta HCG Undetermined – Why Does It Happen?

The desire to get pregnant can speed up so many things… Especially beta hCG! Did you know that it takes a while for hCG levels to rise in the body? Yes, the positive does not always appear as soon as the implantation takes place. and then the undetermined beta hCG gives the air of grace! Let’s first understand hCG better before delving into why the result of beta HCG can be undetermined.

When HCG Appears

A hormone characteristic of pregnancy, hCG appears as soon as the embryo is implanted in the endometrium . It has the basic function of signaling to the brain that there is pregnancy. With this, there is a signal for the corpus luteum to maintain and continue releasing progesterone, which supports the endometrium so that the pregnancy can continue. There are normal levels of hCG expected at each stage of pregnancy.

Why Beta Hcg Can Go Indeterminate?

The problem is when the hCG test for pregnancy is done early, far ahead of time. The undetermined beta hCG appears in cases where  there is not enough of the hormone to be positive, but it is also not so low that it is considered negative. This indeterminate HCG beta can make a real knot in a woman’s head!

Normally, the beta hCG test in the vast majority of laboratories is considered positive in amounts above 25mUI , in others only above 50. Intermediate values ​​between 5 and 24mUi are considered indeterminate even by the laboratories themselves. In these situations, the laboratories themselves recommend repeating the exam after 7 days.

It is expected that  the HCG will double every 48 hours , that is, within 3 days this amount should be at least 1.9 times greater than the original result. In this way it is possible to determine the evolution of the pregnancy. Even though the undetermined beta hCG is below the positive value (25mUi), yes, it can still be considered a good sign!

Although some doctors say that it is possible to have a positive test result even in the first two days after nesting, this is not the best option. It is advisable to wait at least  five days for the probable implantation  (with or without bleeding) and then do a blood test or a pharmacy pregnancy test.

1st week: 10 – 30 mUI / mL
2nd week: 30 – 100 mUI / mL
3rd week: 100 – 1000 mUI / mL
4th week: 1000 – 10000 mUI / mL
2nd and 3rd month: 30000 -100000 mUI / mL
2nd quarter: 10,000 – 30000 mUI / mL
3rd trimester: 5000 – 15000 mUI / mL

What to do to avoid the indeterminate result

To avoid an indeterminate result in beta HCG it is advisable that the woman wait a few days after the menstrual delay . If the woman has a regular cycle , the 5-day delay is enough. But if the cycle is irregular, it is more advisable to wait about 20 days after the day of the relationship that you may have on the fertile day and then leave for the test.

If you can’t take the anxiety out of having a blood test, opt for a highly sensitive and reliable pharmacy pregnancy test. The Famivita pregnancy test , for example, has a sensitivity of 10 mUI, which means that it can detect hCG even 3 days before menstrual delay. The Famivita pregnancy test is also quite inexpensive compared to other highly sensitive tests, at an excellent cost-benefit ratio. You can  purchase it here  in our online store.

When to Repeat Beta HCG

If the beta HCG does not reach the value sufficient for a positive, one must wait four days and repeat in the same laboratory to check the evolution. If the test performed is qualitative – one that shows only positive, negative, detectable, undetectable, reactive or non-reactive – the undetermined beta may be accompanied by a request to repeat the test in a few days  on the answer line. When the responsible biochemist cannot determine a result with confidence, he will suggest a new test. There is usually no need for a new payment from the patient.

The indeterminate in pharmacy test is also possible! Light lines are considered positive but must also be monitored closely to complete the evolution of HCG this time, through the color of the test line. The darker this line, the more HCG in the body!

A tip to know if the light line can be indicative of pregnancy is to observe the color. If the line is clear but has the color of the control line, such as pink or blue, it is because there is hCG in the body.

What to do when it occurs?

An important point to be addressed is when the undetermined beta HCG does not evolve. That is, when the exam is repeated in the suggested time and the value does not increase, but neither does it reduce or the value falls significantly. This may be a sign that a spontaneous abortion has occurred, or the pregnancy is unlikely to go ahead or is a chemical pregnancy . The important thing is to stay calm and wait a few more days to have a result free of doubts and of course, talk to the gynecologist. Make him your best friend!

See also: Pregnancy Test – Beta HCG Quantitative and Qualitative What’s the Difference?

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My name is Dr. Alexis Hart I am 38 years old, I am the mother of 3 beautiful children! Different ages, different phases 16 years, 12 years and 7 years. In love with motherhood since always, I found it difficult to make my dreams come true, and also some more after I was already a mother.

Since I imagined myself as a mother, in my thoughts everything seemed to be much easier and simpler than it really was, I expected to get pregnant as soon as I wished, but it wasn’t that simple. The first pregnancy was smooth, but my daughter’s birth was very troubled. Joana was born in 2002 with a weight of 2930kg and 45cm, from a very peaceful cesarean delivery but she had already been born with congenital pneumonia due to a broken bag not treated with antibiotics even before delivery.

Dr. Alexis Hart

My name is Dr. Alexis Hart I am 38 years old, I am the mother of 3 beautiful children! Different ages, different phases 16 years, 12 years and 7 years. In love with motherhood since always, I found it difficult to make my dreams come true, and also some more after I was already a mother. Since I imagined myself as a mother, in my thoughts everything seemed to be much easier and simpler than it really was, I expected to get pregnant as soon as I wished, but it wasn’t that simple. The first pregnancy was smooth, but my daughter’s birth was very troubled. Joana was born in 2002 with a weight of 2930kg and 45cm, from a very peaceful cesarean delivery but she had already been born with congenital pneumonia due to a broken bag not treated with antibiotics even before delivery.

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