Recently, special test strips that determine pregnancy (strip tests) have become quite popular. You can buy them at any pharmacy kiosk. The action of this most simple express diagnostics is based on the fact that during pregnancy, from the very first day, there is a change in the level of hormones in the woman's blood. The fertilized egg (future fetus) produces hormones that immediately enter the bloodstream, and from the blood inevitably enter the urine. The strip is lowered into the morning portion of urine and determines the level of one of the hormones of human chorionic gonadotropin).
The ease of application of this method is, of course, a big plus. But, unfortunately, its results are quite often erroneous. The content of urine is reflected in what a woman eats, drinks, and most importantly, how her kidneys work. So it turns out that if you drink a lot of liquid the night before or eat a watermelon, the concentration of hormones in the urine will be too low and the test simply won’t “notice” them. It does not work even if protein is present in the urine. It is not uncommon for an error to occur due to a violation of the rules for storage and transportation, or improper use.
Today there are more reliable tests. For example, tablet test cassettes have the same sensitivity and quality as test strips, but they are much more convenient and test errors are minimized. Inkjet and electronic tests are state of the art. They are more convenient to use and have high sensitivity, but their cost is relatively high (compared to strip tests).
If you still want to use such a test, then it is better to buy it in the evening, because, having bought it in the afternoon, you can apply it only the next morning, and therefore, your delay will increase by another day. In addition, it is advisable to make such a purchase in a store where all products are certified. That will be more reliable. And don't forget to check the shelf life.
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