Urine Tests that are used for the early diagnosis of pregnancy, have high accuracy (99% confidence). Do mistaken pregnancy tests Pregnancy tests - early diagnosis Largely depends on how well the woman conducted a study. To avoid erroneous or doubtful results should initially go to the doctor and get a detailed explanation of the test.

How to prevent an erroneous result

Errors during the urine test are possible, but they can be minimized, if you observe certain rules for their conduct. It is important to understand that the test should not do at any time, as it affects its information.

Any test system operates on the principle of reaction of a special reagent which is applied to a test strip and a chorionic gonadotropin in urine. This hormone can be produced only during pregnancy. If a woman is pregnant, her urine test can detect the presence of this hormone is already in the early stages, but it's still a little bit later, when compared with a blood test. The test, which is carried out too early will give erroneous results, so you should do the test only after five to seven days after a missed period. To avoid erroneous results, it should be a re-investigation of the dynamics. As a result of repeated tests, we can conclude the existence of pregnancy.

This is because the production of the hormone occurs after implantation of the embryo into the uterus. After that, gradually increasing the concentration of hCG occurs, the maximum observed in the period of ten weeks. Growth hormone levels occur weekly during the first trimester. For each week of pregnancy characterized by a certain concentration of the hormone in a woman's body, so the test system for the diagnosis of pregnancy is available with regard to the content of the hormone (this will determine the concept of the sensitivity of the test system). If a woman has gained the test with a sensitivity that does not match the concentration of the hormone in the blood, the result may be wrong.

How to test

To study the result was not a mistake, it is necessary to strictly follow the recommendations:

• it is not recommended to do the test in the afternoon. The best time for this - the morning. The morning urine contains the highest concentration of hormone, it is in many ways help to avoid mistakes.
• if taken for investigation test system in the form of strips, it should be immersed to a certain level in the container with the urine as to fully interact with the reagent. There is a kind of inkjet systems, then you just need to substitute the studied test system under a stream of urine. On whether the woman made the test depends on the result.
• evaluate the result can be no sooner than five minutes. Hold the test strip into the urine sample can be up to ten minutes have been further reaction may occur, which will result in a false positive false results. An exception may be called inkjet system, the result of which is visible within one minute and is sufficiently accurate (with 99% confidence). Errors in the use of such tests are minimized.

During the evaluation of the result should not rush to answer. It is necessary to wait some time to get there was a complete chemical reaction with the reagent. It should not be regarded as the result of a mistake, when the second strip of the test system is painted not as active. If a woman did everything right during the study, even this result is regarded as positive. This is indicative of pregnancy. You can also recommend a repeat test in a week and see if there is a pregnancy or not. The final answer can be obtained after consulting a gynecologist and an objective examination.

Marina Solovyov

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