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Beta Hcg Levels

Beta Hcg Levels

What is hCG?

hCG, or human chorionic gonadotropin, is one of the major pregnancy hormones. Once implantation occurs, the placenta begins to form and secrete hCG. hCG levels rise and send a signal to the corpus luteum to keep producing progesterone, which in turn maintains the uterine lining (instead of shedding it and getting your period) and supports the developing embryo. For this reason, this hCG signal is sometimes called the “rescue of the corpus luteum.”

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 Of hCG 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.

Guideline To HCG Levels During Pregnancy

 hCG levels in weeks from LMP (gestational age) :

  • 3 weeks LMP: 5 – 50 mIU/mL
  • 4 weeks LMP: 5 – 426 mIU/mL
  • 5 weeks LMP: 18 – 7,340 mIU/mL
  • 6 weeks LMP: 1,080 – 56,500 mIU/mL
  • 7 – 8 weeks LMP: 7, 650 – 229,000 mIU/mL
  • 9 – 12 weeks LMP: 25,700 – 288,000 mIU/mL
  • 13 – 16 weeks LMP: 13,300 – 254,000 mIU/mL
  • 17 – 24 weeks LMP: 4,060 – 165,400 mIU/mL
  • 25 – 40 weeks LMP: 3,640 – 117,000 mIU/mL
  • Non-pregnant females: 0 – 5 mIU/mL
  • Postmenopausal females: 0 – 8 mIU/mL

Is the hCG blood test always accurate?

No test is 100 percent accurate every time.

The hCG test can give both false-negative results and false-positive results for pregnancy. Your doctor will help you figure out your results or perform follow-up testing if there’s any doubt.

Certain medications, including those that contain hCG, can interfere with hCG blood test results. These include fertility drugs such as Profasi, Pregnyl, and Pergonal.

Smoking marijuana can also result in elevated hCG levels.

Test results can also be influenced by the presence of germ cell tumors. Germ cell tumors can be cancerous or benign, and they’re usually found in the reproductive organs. These tumors grow in the same cells as your eggs or sperm.

A high hCG level in absence of pregnancy could indicate that your doctor needs to do more testing to see if cancer is a factor.

What’s a normal hCG rising pattern?

After implantation occurs, hCG levels will double approximately every 48-72 hours. hCG levels will peak within the first 8-11 weeks of pregnancy, and then will begin dropping off from there and plateau for the remainder of pregnancy [1.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4584104/].

 It’s important to know that the actual value of hCG levels isn’t as important as the pattern of hCG levels doubling every 48-72 hours. If you’ve experienced recurrent miscarriages or are a high-risk pregnancy, then your doctor may recommend a serial beta hCG test by testing your blood several times for hCG levels to see how quickly this hormone is being produced. However, unless there are signs of potential problems, hCG levels won’t be regularly checked after confirming you’re pregnant.

 

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