Pregnancy testing checks for the presence of the pregnancy hormone, hCG or human chorionic gonadotropin, in your body. This hormone is produced within days after implantation, when the fertilized egg attaches to the wall of a woman's uterus. This usually happens about nine days after fertilization, with a range between 6-12 days. If you are pregnant, levels of hCG continue to rise rapidly, doubling early on every two to three days.

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 »

Positive Pregnancy Test Results

Positive pregnancy test results can show up any time before or after a missed period. Read below more about when the pregnancy test result first becomes positive. ... read more »

Normal hCG Levels in Pregnancy

Human chorionic gonadotropin hCG levels can vary significantly in pregnancy, and  there is a wide range of normal levels in early pregnancy. ... read more »

hCG Information Levels and Numbers in Early Pregnancy

hCG pregnancy hormone information on hCG numbers in early pregnancy and all the facts are presented here. ... read more »

hCG Levels in Early Pregnancy

The pregnancy hormone hCG levels double early on in 1-2 days. HCG is being produced by the placenta as soon as implantation occurs, about one week after fertilization and ovulation. ... read more »

Human Chorionic Gonadotropin, the Pregnancy Hormone

Find out more about the pregnancy hormone hCG, how it's used to determine pregnancy, and how the concentration changes during pregnancy. ... read more »

hCG Human Chorionic Gonadotropin During Pregnancy

You will find here hCG levels and all the hCG information and facts about the pregnancy hormone which increases by at least 60% every 2 days until it reaches 1,200 mIU/ml. ... read more »

Pregnancy Test After hCG Injection Shot

I had an hCG human chorionic gonadotropin shot or injection to help me with ovulation. What will happen to the pregnancy test after my hCG injection? ... read more »

Do You Need a Second or Third Trimester Anatomic Ultrasound?

The following is a listing of indications for the anatomic ultrasound. An ultrasound can be of benefit in many situations in the second and third trimesters, including but not limited to the following circumstances. ... read more »

hCG Levels and Pregnancy Test After Miscarriage

My pregnancy test was positive three weeks after miscarriage. ... read more »

Urine HPTs on First Missed Period Day

How accurate are urine home pregnancy tests (HPTs) on first day of a missed period? ... read more »

Relationship Between PMS and Pregnancy

Researchers are still not sure why many women get post-menstrual symptoms (PMS), but they are sure that there is no reliable relationship between PMS and pregnancy. ... read more »

Ov-Watch Fertility Predictor

The OV-Watch fertility monitor detects the chemical surge of chloride ions on the skin in order to predict ovulation. ... read more »

Maternal Serum Screening

During a maternal serum screening the mother's blood is checked for a combination of different markers: alpha-fetoprotein (AFP), unconjugated estriol (uE3), and human chorionic gonadotropin (hCG). ... read more »

Amniocentesis and CVS

Many pregnant women over the age of 35 choose prenatal testing due to the increased chance of chromosome disorders with pregnancies occurring late in life, such as amniocentesis and CVS. ... read more »

Pregnancy Test Negative On 16 DPO

Why is my pregnancy test is still negative 16 DPO? ... read more »

Evaporation Line on Pregnancy Test

The evaporation line may appear after some time and falesly indicate a pregnancy. ... read more »

Routine First Visit Pregnancy Prenatal Tests

First Visit Prenatal Tests are done to screen and diagnose many conditions during pregnancy ... read more »

Early Pregnancy Test - When to Do it

Should you do a pregnancy test before a missed period and what results can you expect? ... read more »

What is a Biophysical Profile Score?

The biophysical profile, or BPP, is a test that checks fetal health and it is usually done after the 24-26th week of the pregnancy. ... read more »

What is the Probability of Pregnancy with these Symptoms

Here are the probabilities of your chances being pregnant with these symptoms from  high to medium to low. ... read more »

Pregnancy Tests - FAQs

What is a pregnancy test, how does it work, when is it positive, are there false positive or false negatives? Frequently asked questions about pregnancy tests ... read more »

Two Pregnancy Tests - Different Results

It is common to get 2 different results on two separate pregnancy tests, especially if done very early in pregnancy and on the same day. ... read more »

Ethnic Distribution Of Blood Types

There are four blood types: O, A, B, and AB. The blood types have different racial and ethnic differences. ... read more »

How Do You Do a Home Pregnancy Test?

There are many different types of home pregnancy tests (HPTs). Most drugstores sell HPTs over the counter. ... read more »

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