Apr 25, 2012
Using a home pregnancy test may be an emotional roller coaster ride. If you have been waiting to conceive, the wait for the result on the test device may be a bit nerve-racking and sometimes, downright frustrating. How accurate is your pregnancy test kit?
Repeated negative result may make you question the accuracy of a pregnancy test kit. Well, most pregnancy test kits give accurate results. One must know how sensitive a pregnancy test kit is and how a pregnancy test kit detects if a woman is pregnant or not to be able to figure out the accuracy of an accurate home pregnancy test.
The accuracy of a pregnancy test kit depends on how sensitive the test kit is to the HCG hormone. Concentrations of HCG are measured in milliInternation Units. Pregnancy test kits that have a sensitivity of 20 mIU/ml are more sensitive than test kits with 50 to 100 mIU/ml. Test kits that are capable of detecting HCG levels that are as low as 20-25 mIU/ml are ideal for pregnancy detection.
When the sperm has fused with the egg and implanted itself in the womb, a woman’s body releases an excess of the HCG hormone in an attempt to prepare for conception. The first sign of pregnancy is a missed period after realising which a woman does the home pregnancy test. By virtue of the home pregnancy test, a woman uses a pregnancy test kit to confirm if she is pregnant. A sample of the first morning urine is taken in a container, a few drops drawn from it with a dropper and released on a pregnancy test device. If the urine of the woman has high levels of HCG hormone, the test device would show a positive result and if it doesn’t, the test will be negative. Every test device produced by a company has different indicators of pregnancy. For instance, while some devices show bands of colours representing a negative or positive result, others show a ‘+’ or ‘-’ sign.
The time when you can start the home pregnancy test depends on the sensitivity of the test kit. Most test kits can give accurate pregnancy test results around 7-10 days post ovulation. The level of HCG in the blood keeps increasing with each day in early pregnancy.
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