Human Chorionic Gonadotropin - The Hormone Of Pregnancy

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Video: Human Chorionic Gonadotropin - The Hormone Of Pregnancy

Video: Human Chorionic Gonadotropin - The Hormone Of Pregnancy
Video: HCG Test | Human Chorionic Gonadotropin Hormone | High HCG Causes 2024, March
Human Chorionic Gonadotropin - The Hormone Of Pregnancy
Human Chorionic Gonadotropin - The Hormone Of Pregnancy
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The human chorionic gonadotropin (hCG) is one of the main ones pregnancy hormones, which is produced by the chorionic tissue 6-8 days after successful conception. Increasing its level is considered one of the main methods for early diagnosis of pregnancy and is a sign of its successful development.

The functions of this hormone are numerous - it is responsible for maintaining pregnancy, participates in the formation of the fetal sex, protects the embryo, preventing its rejection by the body as foreign to the mother's immune system.

How to determine the level of Human chorionic gonadotropin?

As early as the eleventh day of pregnancy, a blood test can detect hormonal changes, and then, on approximately the 12th or 14th day, a rapid urine test will confirm the good news.

In 85% of cases of a normally developing pregnancy, the level of beta-hCG doubles every 48-72 hours. Later, the period of time required to double this hormonal index increases to 96 hours. Then its concentration decreases and remains so until the birth of the baby. By the way, that's why a pregnancy test closer to mid-gestation will probably say "you're not pregnant."

Thanks to modern test systems, a woman can learn about the birth of new life in her womb only a few weeks after intimacy. If conception did not occur during this menstrual cycle, the rapid test will be negative.

In the absence of a menstrual cycle a few days after receiving a negative result, it is necessary to conduct a test again and then in any case make an appointment with a doctor.

Determining of human chorionic gonadotropin levels is part of the 2nd trimester prenatal screening test, which is usually done between 14 and 20 weeks of gestation. Doctors believe that the optimal period is 16-18 weeks after conception. This comprehensive analysis allows you to assess the risk of developing fetal malformations.

Elevated and decreased hCG levels in a pregnant woman

Elevated levels of human chorionic gonadotropin can show:

- multiple pregnancy;

- endocrine disorders in a pregnant woman, such as diabetes;

- incorrectly determined gestational age;

- Down syndrome, but only in combination with other signs of the disease;

- cluster pregnancy - a rather rare pathology of pregnancy in which The human chorionic gonadotropin is 2 times higher than the average for this period.

Low levels of human chorionic gonadotropin shows:

- chronic placental insufficiency;

pregnancy hormone
pregnancy hormone

- miscarriage;

- transferred pregnancy;

- ectopic pregnancy;

- incorrectly determined gestational age.

Human chorionic gonadotropin: what is it measured in?

Human chorionic gonadotropin is measured in miles-international units per 1 milliliter - mIU / ml.

- Less than 5 mIU / ml - negative pregnancy test result;

- 6-24 mIU / ml - contradictory test result, it is necessary to repeat after a few days;

- Above 25 mIU / ml is a positive result.

Any deviation in one direction or another at the level of hCG during pregnancy requires expert advice.

Norms of chorionic hormone in women

Doctors do not use the level of Human chorionic gonadotropinto accurately determine the duration of pregnancy, as these indicators can vary quite widely.

At a human chorionic gonadotropin level of 1000-2000 mIU / ml, transvaginal ultrasound may be performed to visualize the fetal egg. This method of examination will allow the ultrasound specialist to see the embryo for the first time.

One - time determination of hCG level it is not enough, it is important for a specialist to assess the dynamics of hormone growth every 48-72 hours.

HCG level depending on gestational age:

3-4 weeks: 15 - 150 mIU / ml;

4-5 weeks: 101 - 4 870 mIU / ml;

5-6 weeks: 1,110 - 31,500 mIU / ml;

7-8 weeks: 23. 100 - 151 000 mIU / ml;

9-12 weeks: 20,900 - 290,000 mIU / ml;

13-17 weeks: 6,140 - 103,000 mIU / ml;

18-24 weeks: 4. 060 - 80. 100 mIU / ml;

25-40 weeks: 2700 - 78 100 mIU / ml;

Women who are not pregnant: 0 - 5 mIU / ml;

Postmenopausal women: 0-15 mIU / ml.

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