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Normal Hcg Levels Not Pregnant

normal hcg levels not pregnant

What is the human chorionic gonadotropin (hCG) blood test?

The human chorionic gonadotropin (hCG) blood test measures the level of hCG hormone present in a sample of your blood.

hCG is produced during pregnancy. Your doctor may refer to the hCG blood test by another name, such as the:

  • beta-hCG blood test
  • quantitative blood pregnancy test
  • quantitative hCG blood test
  • quantitative serial beta-hCG test
  • repeat quantitative beta-hCG test

There are important differences between hCG blood tests and the hCG urine tests that you can purchase over the counter.

Urine tests can be influenced by factors such as dehydration and the time of day that you test, while an hCG blood test can provide conclusive results even in cases where hCG levels are quite low.

Article at a Glance

hCG levels tell you if you're pregnant. Pregnancy tests measure how much hCG — the pregnancy hormone — is in your blood or urine. hCG begins producing 10 days after conception, doubling every 48 to 72 hours in the first trimester.

Normal hCG levels in pregnancy vary, but when women test above 25 mIU/mL, they're pregnant. hCG levels can reach a height of nearly 300,000 mIU/mL by 9-12 weeks. Low levels do not necessarily mean an unhealthy pregnancy, but hCG levels can be rechecked every 48 to 72 hours.

Low hCG levels could indicate a miscalculated conception date, ectopic pregnancy, or miscarriage. hCG levels that are very high could also indicate an incorrect pregnancy date, multiples, or a molar pregnancy. Abnormal hCG levels have been associated with pre-term delivery, preeclampsia, and other pregnancy conditions, so it's best to discuss any concerns with your OB/GYN.

What is hCG and what does it do?

First off, it’s important to understand how pregnancy tests work and what they measure. When you take a pregnancy test, either by blood or urine, it either measures how much hCG is present or whether hCG is present at all. False positives are pretty rare, so elevated hCG levels are a good bet for pregnancy, with some exception.

 As soon as 10 days after conception, a woman will start to produce hCG via the placenta. hCG helps with the secretion of progesterone during the first trimester, which strengthens the uterus with a lining of blood vessels and capillaries able to support a fetus.

hCG levels typically double every 48 to 72 hours, reaching their peak within the first 8-11 weeks of pregnancy and declining after.

Levels of hCG in the Second Half of the First Trimester

After you hit an hCG level of 6,000 mIU/ml, it may be four days or more until it doubles. Your hCG level tends to peak between week eight and week 11 of gestation. But keep in mind, these are estimates—the exact time frame is different for every woman. By the second half of the first trimester, ultrasound is more reliable than hCG levels for judging whether a pregnancy is viable.

A Word From Verywell

It's important to call your doctor immediately if you notice any vaginal bleeding, cramping, or the passing of any tissue through the vagina. A miscarriage can be extremely difficult to handle, both physically and emotionally. If you do experience one, give yourself an appropriate amount of time to recover and grieve. Your doctor can likely direct you toward support groups that can help you cope.

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