Pregnancy Information
Home   >>   Family   >>   Pregnancy

How do Pregnancy Tests Work?


Pregnancy tests identify a special hormone in the blood or urine produced during pregnancy. This hormone is called human chorionic gonadotropin (HCG), often referred to as the pregnancy hormone. There are two basic types of pregnancy tests, blood and urine.

Home pregnancy test are primarily urine tests. These are easy to use, private and inexpensive. Most are quick and very accurate, claiming a 99% accuracy rate. Tests can be purchased at drug and discount stores without a prescription. False positives are very rare, but a false negative is possible if the test is done too early for sufficient quantities of HCG in your urine. False negatives can be avoided by waiting until your period is due, or about 2 weeks after you ovulate. Confirming a negative result with a second test a few days or a week later is wise. Always follow a positive result with a trip to your doctor for confirmation and prenatal care.

Medicines containing HCG can cause a false positive on your home test, but most over-the-counter and prescription drugs will not affect test results.

Blood test results may take a few hours or a day, and usually require a trip to the doctor or lab. There are two types of blood tests for pregnancy. The first, a qualitative HCG blood test, provides simple positive or negative results, similar to a urine test. This test is slightly less accurate than the quantitative blood test (or beta HCG test) which measures the exact amount of HCG in the blood. The beta test's ability to pick up small traces of HCG in the blood increase its accuracy.

Whichever type of test you choose, it is important to remember that a follow-up trip to the doctor is important for you and your new baby.

Maria writes for Pregnancy Due Date, a site that tries to information for expectant mothers. For more great pregnancy articles, visit our Pregnancy articles archive.


MORE RESOURCES:

eFluxMedia

Teen Pregnancy Rate Is On the Rise
HealthNews, CA - 2 hours ago
The decline in teen pregnancy that the US has experienced for fourteen years seems to be over, and there are several factors that may be playing key roles. ...
Teen pregnancy: Effects are devastating Jackson Clarion Ledger
Mississippi's Teen Pregnancy Rate Costs State Millions Of Dollars ... WJTV
Health: Teen Pregnancy On The Rise CBS 3
Victoria Advocate - Culture11
all 671 news articles


Seattle Times

Repercussions of Candace Parker's pregnancy
Los Angeles Times, CA - 15 hours ago
Parker announced her pregnancy Wednesday. In November, she had been in Bristol, Conn., filming an ESPN SportsCenter commercial. "We didn't know Candace was ...
Should Candace Parker's pregnancy be a concern for WNBA? Examiner.com
Tennessee: Former Lady Vol Candace Parker announces pregnancy Chattanooga Times Free Press
Sparks' Parker is pregnant with her first child Los Angeles Daily News
NBC Los Angeles - Los Angeles Times
all 241 news articles


Pregnancy possible after fibroid treatment
Reuters - 20 hours ago
Among 39 women age 40 and younger who wanted to remain fertile, there were 11 pregnancies in 10 women who conceived between 5 and 30 months following the ...
Pregnancy possible after fibroid treatment, study says ABC7Chicago.com
all 6 news articles


MiamiHerald.com

Early Caesareans Pose Risks to Newborns
New York Times, United States - 14 hours ago
Although babies born by Caesarean section after just 37 weeks of pregnancy are considered full-term, the study found they were twice as likely to suffer ...
New Research on Risks of Early Scheduled C-Sections Wall Street Journal Blogs
Study: Setting early C-sections puts babies at risk Houston Chronicle
Early Repeat C-Sections Increase Risks, Study Finds Washington Post
eFluxMedia - TopNews
all 292 news articles


Teenage Pregnancy And Problems
Meadow Free Press, ID - 14 hours ago
Teen pregnancy is rarely a desirable event for a girl as well as for other potential baby’s relatives. But the main trouble is not that the future mother is ...
What happens if your teenage son gets a girl pregnant? Village News Network
all 2 news articles


RTE.ie

Rebecca Romijin Congratulates Ana Ortiz on Pregnancy
OK! Magazine, NY - 12 hours ago
New mom of twin girls, Rebecca Romijn, is over the moon about co-star and pal Ana Ortiz's pregnancy. Rebecca tells OK!, "I'm so happy for Ana. ...
REBECCA ROMIJN STAMOS - ROMIJN'S DELIGHT FOR ORTIZ'S PREGNANCY Contactmusic.com
Ugly Betty Star Pregnant Star Magazine
Ugly Betty Star Ana Ortiz Pregnant! Hollyscoop
all 64 news articles


Examiner.com

How to make healthy food choices during pregnancy (even when you ...
Examiner.com - 27 minutes ago
Pregnancy, as you may know, can be lots of fun. It also can be a lot of work. How so? Well, for one thing, you're responsible for that little bean down ...


Morning Sickness - 5 Tips To Reduce Morning Sickness During Pregnancy
Meadow Free Press, ID - 20 hours ago
But, for all others let's take a closer look at some of the main symptoms and possible remedies to this pregnancy issue. You may be surprised at the answers ...
Susan S: "Good Morning, Sickness" EmpowHer
all 2 news articles


CBS: Bristol Palin the Face of ‘Growing Crisis’ of Teen Pregnancy
NewsBusters - 15 hours ago
A graphic appeared on screen declaring: "Teen Pregnancy: The Growing Crisis." Later, Solorzano explained: "After more than a decade of progress, ...


Teen pregnancy on rise after 15 years of decline
MinnPost.com, MN - 16 minutes ago
The number of young women like Rosales had been on the decline since 1991, but teen pregnancy is on the rise again, and many experts are wondering why. ...

Pregnancy - Google News


site map © 2006 Online-Information-Directory.com