How does a pregnancy test work?
Author: AlbertaDowse Total views: 3 Word Count: 369
A pregnancy is very important for any woman, therefore any woman wants to know for sure if she's pregnant or not as early as possible; as the "old" pregnancy signs have proved to be false sometimes, women prefer to try any methods which can give them an accurate result. Nowadays, the most handy and the most accurate method to find out the truth about a pregnancy is a pregnancy test.
Pregnancy tests have two approaches - the professional ones use your blood to detect pregnancy and are taken in clinics; the other ones(which also have accurate results) are based on urine and can be taken without specialized help. They work by the same principle: they try to determine the presence and the level of hCG(pregnancy hormone) in the body. This substance is produced by the placenta approximately six days after fertilization occurs.
The difference between those tests is the way they are using to detect the presence of hCG: as their name suggest, those blood tests (also called clinic tests) are using a woman's blood to detect it and those urine ones (also called home tests) are using her urine. As any other hormone, this hCG appears first in the blood and only then in the urine, therefore those clinic tests can give a more accurate result earlier than the home ones. However, the most chosen tests are the home ones, not only because they offer you the possibility to find out about your pregnancy in the privacy of your own home, but also because of their cheaper prices and their important features: most of them have an accuracy level of over 99%, are easy to use, easy to read ( for example those digital ones can give you the result spelled out in simple words: "Pregnant" or "Not Pregnant") and very fast.
That's pretty much it - as you can see there's a very simple principle behind this, and yet it gives a very accurate result. The benefits are fantastic, as any woman can find out on her own whether she's pregnant or not.
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When to take a pregnancy test? If you want the answer to this question and many others, just visit the Pregnancy Test 101 Blog.
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