One of the simplest and most effective way to determine whether the pregnancy is urinary test. Types of pregnancy tests Pregnancy tests - early diagnosis   very diverse, they differ in their sensitivity, efficiency and cost. In the short term, when the delay menstrual period is only a few days, it is possible to confirm or deny the fact of pregnancy.

The qualitative difference between different test systems

Conventionally, there are three main groups, which are produced by urinary tests. The main difference - is qualitative characteristics affecting their efficiency:

• The first group includes the most common test system in the form of strips. They are impregnated with a special reagent that by reacting with the urine strip changes color if pregnancy is. To use this test, a woman should lower the test strip in a container of urine, hold it for a short time (an average of five minutes) and to evaluate the results. Staining bands confirms that the woman is pregnant. There are options when these tests give false negative results. If necessary, re-produce a survey in seven days.
• the second group includes special plates having two "window". Once in the first "window", urine spreads to the layer where a reagent and reacts with it. The result can be seen in the second "window". This type of test systems is more qualitative. Tablet tests are much more expensive, but it justifies the high quality results of the survey.
• They are the highest quality inkjet system .  By their effectiveness, they are in the first place .  An important drawback is their high cost .  It contains special particles that are attached to a hormone produced in the body of the pregnant woman .  Establishing the presence in urine of human chorionic gonadotropin confirms the pregnancy .  Particles are antibodies to gonadotropin .  If the urine of women have this hormone, it is their interaction on the basis of the reaction "antigen-antibody" .  Result can be obtained very quickly, almost the first minute survey .  Ink tests are tests of the third generation and provide accurate results of analysis .  The set includes a cassette holder and a cap .  To carry out the analysis of urine, a woman must remove the cap and substitute marked with an arrow end of the tape under the urine stream .  Then you need to close the cap end of the cartridge and leave for five minutes .

Every woman can choose the most suitable, comfortable and affordable test for the analysis of urine.

The sensitivity and accuracy of the different test systems

The tests that the pharmaceutical market are very wide, give different results for their accuracy. In some cases, the accuracy of the result may be from 99 to 99, 9%, thus it is possible to diagnose pregnancy when the delay is only one day. This is due primarily to the fact, which has a sensitivity test system.

The quality of diagnostics is also influenced by the storage conditions, strict adherence to the instructions and even the cleanliness of utensils, which analyze urine. No matter what kind of tests are used, the study is best done in the morning. It is not excluded for the analysis of the daily taking of urine, but it can affect the quality of diagnosis, as the urine is more diluted, not concentrated. If it does become necessary to do the test day, it is recommended that there was a delay in urine within a few hours, then it will provide a more reliable result.

Another point that affects the quality of the analysis, - a time factor. Regardless of the type of test system, underexposure or impossible perederzhivat test time. For any kind of test is necessary to maintain a clear time frame, on average, it is five minutes. It is a mistake to think that it is better to carry out the test for longer - this has a negative impact on the final result.

Marina Solovyov

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