Pregnancy Hormone HCG

The human chorionic gonaotropin (better known as HCG) is a hormone produced during pregnancy. This hormone is made by those cells that form the placenta, which nourishes the fertilized egg that becomes attached to the uterine wall. The pregnancy hormone HCG is detected by a blood test after eleven days of conception. It is found in urine in about 12-14 days after conception and the pregnancy hormone HCG doubles every 72 hours. There are many things that you need to know about this pregnancy hormone HCG.

Facts about Human Chorionic Gonadotropin

Some of the facts or key things that you are supposed to know about this pregnancy hormone are:

  • The HCG hormone doubles every 48 – 78 hours in about 85% of the normal pregnancies. As the pregnancy progresses, the HCG levels also get higher.
  • This pregnancy hormone is usually measured in milli international units per milliliter.
  • An HCG level of more than 25mIU/ml is regarded as positive for any pregnancy, and if the levels are less than 5mIU/ml, then it is considered a negative pregnancy.
  • You can opt for a trans-vaginal ultrasound if the HCG levels are between 1,000 – 2,000mIU/ml.
  • You are not supposed to come to any conclusions regarding pregnancy until the HCG levels reach at least 2,000 because the conception date can be inaccurate.
  • Sometimes, one single HCG test is not enough to determine the health of the pregnancy. So, multiple HCG tests are done for a more accurate diagnosis of the pregnancy.
  • These levels that are obtained from the HCG tests cannot be used to date a pregnancy because the numbers can vary widely.

 HCG can be detected through blood or urine tests.

High HCG Levels

High HCG levels may indicate:

  • A multiple pregnancy
  • A molar pregnancy
  • A miscalculation of the pregnancy dates

Low HCG Levels

Lower levels of HCG can be due to many reasons and could be a sign for any of the following:

  • An ectopic pregnancy
  • A blighted ovum or miscarriage
  • A miscalculation of the pregnancy dates

If the HCG levels are high or low, one thing that you need to do is to get your HCG levels rechecked within the 48 to 78 hours to find out if there are any changes. A doctor may not advise you to undergo these tests unless you show signs of a problem. So, check your HCG levels and consult your doctor if there are any problems

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