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Spoiled pregnancy tests

The pregnancy test is a very convenient product forher diagnosis at home. The reliability of most of them is 95-99%. The most accurate are costly digital and inkjet tests. With the onset of pregnancy in the body of a woman, chorionic gonadotropin begins to be produced. With an increase in the concentration of this hormone in urine to a certain level, the rapid test reagents react with it chemically, the products of which stain the test strip in red or pale pink. If the test is spoiled, it can give a false negative result, since the chemicals in its filler are likely to have already been disintegrated. In this state, they can not react with the chorionic gonadotropin.

How to determine if a test is corrupted

To increase the chances of a reliable determinationpresence or absence of pregnancy, you need to choose the test in the pharmacy correctly. First of all you need to pay attention to the expiry date of the goods. Do not buy expired products. Incorrect storage can also make the test unusable. Before buying, you need to carefully look at the appearance of the product. Strip strips must be sealed. If, after opening the package, the test strip appears slightly swollen, or if some defects are clearly visible on it, it is likely that it will show an unreliable result. If in the process of using the test, even a control strip does not appear on it, this indicates that it is completely unsuitable for use. You need to go to the pharmacy and get another test. At the same time, it is advisable to make sure that the goods are from another lot, or buy a more expensive analogue. If a woman doubts that the result of express analysis is reliable, she can do it again. It is better to choose in the store a completely different tool for express analysis. The more expensive the pregnancy test, the higher its sensitivity and the lower probability that it may be spoiled. To monitor the result, you can give a similar test to a friend whose pregnancy is no longer in doubt. If the express-analysis tool from the same lot shows a false-negative result, the batch of tests is likely to be defective, or the conditions of their storage were violated.