How do the tests work?
Today, most women before themselves going to the gynecologist themselves carry out a diagnosis of pregnancy with the help of pharmacy tests. They differ in price, the manufacturer, the format of use. The last is three types of tests: inkjet, test strips, test-cassettes. We can say that these are different generations of tests, the most modern of which is the jet test. But the principle of all three tests is the same. This information about the presence in the body of a woman's pregnancy indicator - the hormone of the chorionic gonadotropin. It appears only with the onset of pregnancy, more precisely after attaching a fertilized egg to the uterine wall, which is called the embryo until 8 weeks. If the pregnancy from the first days is normal, then at 5 & minus; 6 day after conception, the hormone already exists in the body of the future mother. Then its level doubles every two days.
Sensitivity of pregnancy tests
Pregnancy tests vary in sensitivity. There are tests with a sensitivity of 25 mM, 20 mM, 10 mM. These indicators are always written on the test package. The higher the digit, the lower the sensitivity of the test. Accordingly, for a reliable result, you need to buy a high-sensitivity test, with a score of 10. This means that he can recognize a pregnancy with a lower concentration of hCG hormone in the urine.
The test strip is a relatively inexpensive option, and its sensitivity is 20-25 mM. To carry out such a test, you need to collect urine in a container, and the accuracy of the result depends on the accuracy of the strip immersion.
The test cassette, as a rule, called yesterday's testing day. Capacity, a pipette for urine, measuring the required amount of it and only then carrying out the test is a technique for diagnosing this kind of tests.
Advantages of ultra-sensitive tests
High-sensitivity tests (inkjet) are representatives of the latest generation of tests. Their appearance significantly facilitated the procedure for self-diagnosis for pregnancy. After all, it's enough just to substitute the test under a stream of urine and a quick, reliable and qualitative result is obvious. For such tests, the testing time and location does not matter. Therefore it is very convenient.
High-sensitivity tests are divided into two types: an ultrasensitive test and an ultrasensitive pregnancy test.
The ultrasensitive test has a sensitivity of 20 mM. He will show the result on day 10 after the occurred fertilization of the egg. Supersensitive test has the same sensitivity, but will give the result already on day 7. That is, if you prefer this test, then even before the delay of 5-7 days you can know exactly about your interesting situation or dispel doubts about it.
Most test manufacturers always point to packaging its accuracy. For example, the ULTRA ultrasensitive test strip has a sensitivity of 10 mIU / ml and an accuracy of 99.9%. The ultrasensitive test cassette SEZAM determines pregnancy from the 7th day from the moment of fertilization of the ovum, has a sensitivity of 10 mIU / ml and the same accuracy of 99.9%.
At the forums, pregnant women are advised to buy two ultrasensitive tests from different manufacturers for safety. This is a private matter for every woman, as well as the right to choose a suitable test at a pharmacy.