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Hcg Levels By Day

Hcg Levels By Day

What Is hCG Human Chorionic Gonadotropin?

hCG stands for "Human Chorionic Gonadotropin," the pregnancy hormone, which is produced by the placenta and which is detected in the blood within a few days after implantation. When you test at home with a pregnancy test, you actually test for the presence of hCG in the urine. If hCG is present, then the pregnancy test will be positive, and that means you are pregnant unless there is a false positive pregnancy test.

Increase OfhCG In Early Pregnancy

hCG usually doubles every 48-72 hours very early in pregnancy and every 3-4 days later on until about 9-10 weeks of the pregnancy when it levels off. There is no single "normal" hCG level during early pregnancy and there are wide ranges of normal levels which you can check with our hCG calculator.

hCG blood levels

Low levels of hCG may be detected in your blood within about 7 days of you becoming pregnant. hCG levels are highest towards the end of the first trimester, then gradually decline over the rest of your pregnancy.

The average levels of hCG in a pregnant woman’s blood are:

  • non-pregnant women - less than 10 U/L
  • borderline pregnancy result - 10 to 25 U/L
  • positive pregnancy test - more than 25 U/L
  • pregnant women, about 4 weeks after the LMP (average 1 week before first missed period) - 0 to 750 U/L
  • pregnant women, about 5 weeks after the LMP (week after first missed period) - 200 to 7,000 U/L
  • pregnant women, about 6 weeks after the LMP - 200 to 32,000 U/L
  • pregnant women, about 7th weeks after the LMP - 3,000 to 160,000 U/L
  • pregnant women, about 8 to 12 weeks after the LMP - 32,000 to 210,000 U/L
  • pregnant women, about 13 to 16 weeks after the LMP - 9,000 to 210,000 U/L
  • pregnant women, about 16 to 29 weeks after the LMP - 1,400 to 53,000 U/L

pregnant women, about 29 to 41 weeks after the LMP - 940 to 60,000 U/L

How Physicians Interpret hCG Results

It is important to note that any single hCG test in early pregnancy does not tell much about the health of a pregnancy or fetus because individual women have a wide variation in hCG levels, and even one woman may experience wide variation in hCG numbers from one pregnancy to the next.

Rather, physicians look at the trend in the number among two or more tests. The hCG doubling time, over two separate blood tests spread over a period of days, usually provides more useful information than a single hCG level when evaluating a pregnancy. In most cases, the number will double over a period of 48 to 72 hours.

What Are hCG Levels?

In order to fully understand hCG levels, let’s take a look at the earliest stages of pregnancy. Once the egg is fertilized by the sperm, the cells of the egg undergo immediate changes, with cells dividing and dividing, quickly growing into what is called the embryo. The layer of cells that surround the embryo is what produces the hormone human chorionic gonadotropin (hCG). As the embryo continues to grow, these same cells that produce hCG eventually form into the placenta, which embeds itself into the wall of the uterus.

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