Pregnancy testsWe offer you a wide range of pregnancy tests, but first of all read some convinient information given below.
Generaly, home pregnancy tests can detect the presence of a pregnancy hormone (called human chorionic gonadotropin, or hCG) in a sample of urine. High levels of hCG are produced during pregnancy. The home tests produce similar results to the pregnancy tests done on urine in most health professionals' offices if they are used exactly as instructed.
When a woman becomes pregnant, the egg usually is fertilized by a sperm cell in a fallopian tube (conception). Within 9 days after fertilization, the egg moves down the fallopian tube into the uterus and attaches (implants) to the wall of the uterus. When the fertilized egg implants, the placenta starts to develop and begins to release hCG into the woman's blood. Some of this hCG also gets passed in her urine. In the first few weeks of pregnancy, the amount of hCG in the urine rises rapidly, doubling every 2 to 3 days.
There are three basic types of home pregnancy tests:
* The most common types of home pregnancy tests use a test strip or dipstick that you either hold in the urine stream or dip into a sample of urine. An area on the end of the dipstick or test strip changes color if hCG is present, meaning you are pregnant.
* A second type uses a urine collection cup or well with a testing device. To use this type of test, you place several drops of urine into a well in the testing device or you immerse the well into urine that has been collected in a cup. An area of the device changes color if hCG is present, meaning you are pregnant.
* A third, less common type of test involves mixing a sample of urine in several tubes or cups with a powder or liquid to produce a chemical reaction. The presence of hCG causes a chemical reaction that produces a color change. The color of the resulting mixture is then compared against a color comparison strip.
A first morning urine sample (that has accumulated in the bladder overnight) provides the most accurate test results.
The accuracy of home pregnancy tests vary because:
* The days of a woman's menstrual cycle and ovulation can vary each month.
* The exact day of implantation of the fertilized egg can vary.
* Each home pregnancy test kit has a different sensitivity to detect hCG.
While a few home pregnancy tests may be sensitive enough to detect a pregnancy on the first day of a woman's missed period, most test kits are more accurate about a week after a missed period.
Home pregnancy kits are available on our online drugstore.
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