Why sometimes mistaken pregnancy tests?

pregnancy
Home pregnancy tests, no doubt, convenient and pleasing, but … only so long, until he be mistaken: congratulate the forthcoming motherhood, which in reality is not expected, or soothe in vain already held a future mother. The tests are anonymous, convenient and relatively cheap. They work on the first day of missed period, but sometimes give false results. Why? – The test can be expired or is damaged due to improper storage. - Test held true: only informative morning urine, which should lower the bar on time and to a level indicated on the package. - Test carried out too early. The Russian drugstores tests based on the determination of the specific hormone – human chorionic gonadotropin, which is a female body produces during pregnancy. Sufficient long.
detection of hormonal changes are not earlier than two weeks after fertilization, so a test run for the pharmacy the day after the rash of contact is useless: in vain just calm down. - In rare cases, human chorionic gonadotropin produced a tumor, and the test is positive, although she is not is pregnant. - hormonal drugs can smear the picture. - Ovarian dysfunction. The development of various sex hormones is broken, and the overall picture leads to an erroneous test result. - Pathological pregnancy. With the threat of miscarriage test may become negative once. It happens that this negative result is the first sign of abortion. - Faulty test. A year ago, gynecologists trust the results of tests on almost all 100, but now they prefer to see the patient and do an ultrasound. To insure you can simultaneously use the tests from different manufacturers and focus on the body’s own signals: if pregnancy occurs rectal temperature (measured at the anus in the morning, not getting out of bed) above 37 °, a little sore chest and enlarged.





