pregnancy testing

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.

    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. ... more »

    Low and Slow Rising hCG Blood Levels in Pregnancy Test

    When is the hCG titer in the blood considered to be too low and when is it considered to be slow rising? ... more »

    Routine First Visit Pregnancy Prenatal Tests

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

    When to Test for Pregnancy With the 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 female body does not always live up to this expectation. ... 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. ... 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. ... 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. ... more »

    False Negative Pregnancy Test

    A false negative pregnancy test is a pregnancy hCG test which is negative when in fact you are pregnant. You are pregnant but you have a negative pregnancy test. ... more »

    False Positive Pregnancy Test Result

    A false positive pregnancy test result is a pregnancy hCG test that is positive when you are not pregnant and there are many possible reasons for this. ... more »

    hCG Levels and Pregnancy Testing

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

    Blood Test for Blood Type and Rh Status And Antibody Screen

    At your first prenatal visit, th doctor will do several blood tests such as your blood type, whether it's type O, A, B, or AB, and the Rh status, whether it's Rh-negative or Rh-positive. ... more »

    When Does the Urine Home Pregnancy Test Become Positive

    A urine home pregnancy test HPT usually becomes positive within a week or so after implantation, or around the time of your expected menstrual period. ... 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). ... more »

    Percentiles of Fetal Birth Weight

    This table shows the percentiles of birthweights in grams by weeks of the pregnancy and gestational age. ... 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. ... 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. ... more »

    Negative Pregnancy Test Late Period: Could I Still Be Pregnant?

    A negative pregnancy test before a missed period could mean you tested too early; a negative test after a missed period often means you are not pregnant. ... more »

    What Does the Blood Pregnancy Test Reveal?

    A pregnancy test is run by the obstetrician during the first office visit to confirm the presence of the hCG hormone and confirm the pregnancy. ... more »

    False Positive False Negative Pregnancy Test

    A false positive early pregnancy tests is a pregnancy test that is positive when in fact you are not pregnant. ... 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. ... more »

    How Do Early Pregnancy Tests Work?

    Pregnancy tests detect the pregnancy hormone hCG or human chorionic gonadotropin. Early urine pregnancy tests are usually positive about 12-14 days after ovulation. ... more »

    All About Amniocentesis

    Amniocentesis is a procedure performed during pregnancy to examine a baby's chromosomes. Most often, an amniocentesis is done between 16-20 weeks of pregnancy (gestation). ... more »

    How To Do A Urine Home Pregnancy Test in 12 Steps

    In 12 steps we show you how to improve the accuracy of your urine pregnancy test ... more »

    Negative Blood hCG Pregnancy Test

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

    First Trimester Screen Test - Nuchal Translucency

    The first trimester screening also known as nuchal translucency screening, or NT, is a prenatal test, ultrasound and a blood test that can help determine the likelihood of having Down's Syndrome ... more »

    Amniocentesis and CVS

    Amniocentesis and CVS are both invasive tests done in pregnancy to diagnoses certain problems. ... 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. ... more »

    Early Pregnancy Test - When to Do it

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

    I Have Early Pregnancy Symptoms, Could I Be Pregnant? Am I Pregnant?

    If you think you may be pregnant and or you're experiencing some possible symptoms read here more about pregnancy diagnosis! ... more »

    Pregnancy Test Calculator: How early and when should I take a Test?

    Pregnancy test calculator: how early and when you should take a Pregnancy Test depends on when they are positive in relation to your period. ... 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. ... 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. ... more »

    Low and High hCG Levels

    What do they mean? ... 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. ... more »

    Pregnancy Tests - Introduction

    How does a pregnancy test work? Pregnancy tests work by detecting human chorionic gonadotropin (hCG) is a hormone found only in pregnant women. There are both urine and blood pregnancy tests (HPTs) ... more »

    How Early Can Pregnancy Be Detected with a Test?

    How early can pregnancy be detected? Learn all about pregnancy tests, false positive pregnancy tests, and false negative pregnancy tests. ... more »

    Pregnancy Tests Reviews

    Which pregnancy tests are best? ... more »

    Pregnancy Tests - Consumer Reports Reviews

    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. ... more »

    1. Product Reviews

    Reviews of TTC and pregnancy items ... more »

    When Does a Home Pregnancy Test (HPT) Become Positive?

    When does a home pregnancy test (HPT) become positive? ... 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 ... more »

    Pregnancy Test Q&As

    All pregnancy test questions answered. ... more »

    Positive Pregnancy Test After Ovulation

    When does the HPT become positive? ... more »

    Glucose Challenge and Glucose Tolerance Test - GCT and GTT

    Before and during pregnancy you can diagnose diabetes through an iinitial screening test, the Glucose Challenge Test (GCT), and it's often done between 24 and 28 weeks of pregnancy. ... more »

    hCG Levels and Twins

    Could it be twins? ... more »

    hCG in Early Pregnancy

    What is a normal hCG level? ... more »

    Feeling Pregnant With Negative Home Pregnancy Test (HPT)

    I am feeling pregnant but got a negative home pregnancy test result, what should I do next? ... 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. ... more »

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