What is hCG (Human Chorionic Gonadotropin)?

Human Chorionic Gonadotropin or hCG is the pregnancy hormone produced by the placenta as soon as implantation happens, about one week after fertilization and ovulation. As soon as the embryo implants and the placenta attaches to the uterine lining, hCG enters the circulation and eventually is excreted into the urine. Many women wonder what the hCG level in early pregnancy is. In most normal pregnancies with hCG levels below 1,200 mIU/ml, the hCG usually doubles every 48-72 hours and increases by at least 60% every two days. Once it reaches about 6,000 mIU it takes longer to double and after 11-12 weeks the hCG normally decreases.

At an hCG level greater than 12,000 mIU/ml there should be a visible embryo with a heartbeat, though it could take up to an hCG level of 22,000 mIU/ml to first see the fetal heartbeat. A low hCG count in pregnancy may indicate a miscalculated date of conception, an ectopic pregnancy, or a possible miscarriage. However, a perfectly healthy pregnancy may have low hCG counts and levels. A high hCG count in pregnancy may indicate a miscalculated date of conception, a molar pregnancy, or a multiple pregnancy. Some fertility drugs usually hCG injections containing hCG may affect your hCG levels. Other than that, other medications including antibiotics and oral contraceptives will not affect your hCG level. If you are taking a fertility medication that would affect your hCG count then your healthcare provider should discuss with you how this would affect your tests.

hCG Doubling Increase Calculator

This hCG calculator and hCG levels chart assess whether your hCG levels are rising normally and doubling normally. ... read more »

Normal hCG Levels in Early Pregnancy

During pregnancy, hCG levels have clear patterns. Find out more about hCG and use our free hCG calculator. ... read more »

First Trimester of Pregnancy Guide

During the first trimester of pregnancy, so many changes happen, but some of these changes may not be quite what you expected! ... read more »

How Soon Will a Pregnancy Test Be Positive?

You want to take that test as soon as possible, but should you? ... read more »

Slow Rising hCG Levels

Slow Rising hCG Levels In Early Pregnancy hCG usually doubles every 48-72 hours very early in pregnancy, when the hCG is below 6,000 mIU/ml. A rise above 60% in 48 hours is considered normal and below 53% abnormal.  ... read more »

Pregnancy Test: When Is it Usually Positive?

No matter how hard you try and try interpreting body changes as signs of pregnancy, you will need a positive pregnancy test to confirm that you are pregnant. But when is the best time to take a pregnancy test? ... read more »

How Home Pregnancy Tests Work

How home pregnancy tests (HPTs) work. ... read more »

HPT - How To

How do I do a home pregnancy test (HPT)? ... read more »

Doctor's Office vs. HPT

Which urine test is more accurate? ... read more »

Darker Line More hCG

Does it mean the hCG is increasing? ... read more »

Life and Pregnancy After Miscarriage

After miscarriage, many women have a long list of questions about physical health, mental health and parenthood. Understanding changes after miscarriage is often enough to put your mind at ease. ... read more »

Top 5 Questions About Pregnancy Tests

Before jumping into a home pregnancy test or other form of pregnancy test, it is best to understand how they work and the best way to use them. ... read more »

Facts About Pregnancy

Pregnancy is a time in life when women feel closer to their spouse and body more than ever before. Here are a few facts about pregnancy for expecting moms. ... read more »

Why Do I Have Pelvic Pain During Pregnancy?

One of the most concerning for many pregnant women is pelvic pain. Pelvic pain can be attributed to more than just the weight of the uterus and fetus and it is not always associated with labor. ... read more »

How Pregnant Am I When…?

There are milestones throughout a pregnancy. Some are physically noticeable and others happen and pregnant women have no idea they occurred. How pregnant am I? ... read more »

First Trimester of Pregnancy: When to Tell Others

It is commonly known that miscarriage and other complications tend to occur during the pregnancy first trimester so many couples choose to wait before telling family and friends. ... read more »

Why Does a Miscarriage Occur?

The American College of Obstetricians and Gynecologists estimate up to 25% of pregnancies will end in pregnant miscarriage, but why does pregnant miscarriage occur? ... read more »

6 Stages During Pregnancy: The Changing Female Body

Stages during pregnancy are often divided up into weeks or trimesters. Within these common stages in pregnancy are six major times of change. ... read more »

When To Take A Pregnancy Test To Get Best Results

Despite the claim that home pregnancy tests are effective as little as two to three days before the first day of your next menstrual cycle, the human body does not always live up to this expectation. ... read more »

Morning Sickness

Morning sickness, nausea and vomiting can be among the first pregnancy symptoms and signs beginning around 4 weeks to 6 weeks gestation. ... read more »

Restorative Medicine, Endometriosis and Restored Fertility

Growth of endometrial tissue on external reproductive genetalia can result in extreme pain and infertility. Surgical removal of the endometrial tissue can reduce pain, but post-surgical therapy is needed for optimal recovery and outcome. ... read more »

Gonal-F During Pregnancy and Breastfeeding

All about Gonal-F during pregnancy, breastfeeding and trying to conceive (TTC). Is it safe for use? ... read more »

Molar Pregnancy Minus the Chemotherapy

Molar pregnancy, hydatidiform mole or H mole refers to an abnormal uterine growth where the product of the union of the egg and sperm does not become a fetus but instead, grape like sacs are formed. ... read more »

Serum HCG Levels Do Not Predict Oocyte Maturity

HCG (human chorionic gonadotropin) is the pregnancy hormone that triggers a positive pregnancy test. The hormone is used to help facilitate egg maturation and release. ... read more »

Can Vaginal beta-HCG Levels Predict PPROM?

Researchers in Tehran recently published a cross-sectional study on the effectiveness of vaginal b-human chorionic gonadotropin (HCG) levels on predicting preterm premature rupture of membranes (PPROM). ... read more »

hCG While Pregnant and Breastfeeding

All about Human Chorionic Gonadotropin (HCG) during pregnancy, breastfeeding and trying to conceive (TTC). Is it safe for use? ... read more »

Medical Treatment of Ectopic Pregnancy

Current treatment protocol of ectopic pregnancy involves IM (intramuscular) injection of methotrexate and monitoring. Researchers recently completed a study on the effectiveness of this protocol. The study was published in the journal La Tunisie Medicale. ... read more »

Determination of the Gestational Age During Pregnancy

Doctors use various methods to determine gestational age of a pregnancy.The most common test is the ultrasound, which measures the size of the gestational sac and the length between crown and rump. ... read more »

Pregnancy Hormones Ease Chronic Pain

During pregnancy, childbirth, and thereafter, many women don't experience pain to the degree expected. Many who use opiates for pain management find they don't need as much of it during this time. ... read more »

When Is the Blood hCG Pregnancy Test Positive?

A blood pregnancy test usually becomes positive within 3-4 days after implantation, or several days before your expected menstrual period, when  hCG levels have reached a high enough level. ... read more »

What Happens the Week After Fertilization?

Fertilization usually happens within 12-24 hours after ovulation. After fertilization, the fertilized egg starts traveling down the fallopian tube toward the uterus. ... read more »

Twins and hCG Levels

Does a fast rising hCG level always indicate that you are carrying twins? What else do hCG levels signify? Could it be twins or is there really just one baby in there? ... read more »

How Early Can Pregnancy Be Detected?

How early can pregnancy be detected? Learn all about pregnancy tests, false positives and false negatives, and how early you can take a pregnancy test! ... read more »

Progesterone Levels - Routine

Should I have my progesterone level checked? ... read more »

When Is the Best Time And How Soon To Take a Pregnancy Test - When is it Positive?

The earliest time a urine pregnancy test is positive is around the time of your missed period, and a blood test will be positive 2-3 days earlier. ... read more »

What Are My Chances Being Pregnant With a Negative Pregnancy Test?

A repeatedly negative early pregnancy test when you missed your period means that you are not pregnant. ... read more »

Twins When HCG Increasing Too Fast

In most pregnancies, the normal hCG rises is at least 60% over 48 hours. In twins it may rise much more, but  it's not possible to diagnose a twin pregnancy just from the hCG levels alone. ... read more »

How Soon Can I Take a Pregnancy Test?

Most current pregnancy test kits (sensitivity 25 mIU/ml) detect hCG in the urine as early as 3-4 days after implantation, though it often takes longer. ... read more »

hCG Levels and Pregnancy Testing

This article is about normal hCG pregnancy hormone levels implantation symptoms and bleeding and early pregnancy tests ... read more »

hCG Increasing Fast

There is no sufficient scientific evidence that with twins there is always a faster-than-usual rise in hCG. Normal hCG values can vary up to 20 times in normal pregnancies. ... read more »

False Positive Pregnancy Test - Always Pregnant?

A positive pregnancy test usually means that you are pregnant. There are only a very few circumstances in which a false positive pregnancy test means that you are not pregnant . ... read more »

What Affects Normal hCG Levels In Pregnancy?

Human chorionic gonadotropin, more frequently referred to as hCG, is a hormone that is produced during pregnancy. ... read more »

Progesterone and Pregnancy Tests

Can progesterone supplements influence the test? ... read more »

Home Pregnancy Tests

Consumer Reports tested 18 pregnancy tests to find out which brands work best. Buy the top performers and follow their tips for the most accurate results. ... read more »

Positive Pregnancy Test: When Does it Happen?

A positive pregnancy test occurs only after the fertilized egg has first implanted into the uterus and then sends enough amounts of hCG the pregnancy hormone into your blood stream. ... read more »

Normal hCG Levels

When a blood pregnancy test is run, the hCG level will be reported to the obstetrician. This level will give the doctor a look into the age and the health of the pregnancy. ... read more »

Negative Blood hCG Pregnancy Test

Could I still be pregnant even though my blood hCG test was negative? ... read more »

Early Home Pregnancy Test HPT

Several brands of home pregnancy tests claim to test for pregnancy before the missed period. These tests are more sensitive to hCG. ... read more »

What Is A Phantom hCG And What Causes the False Positive Pregnancy Test

A "Phantom hCG" is a false positive blood pregnancy test. Patients with phantom hCG will have a persistently and not significantly rising positive blood pregnancy test despite a negative urine test. ... read more »

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