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Some women also think it is okay to reuse a digital pregnancy test kit. You cannot use nay pregnancy kit at all. The digital kit does not give a color indicator; it only shows a digital sign that you need to read. The second time, they got a positive result. How did this happen? These cases happen as a result of the condensation phenomenon. The chemicals present it the home pregnancy test kit can change because it can react to other factors in longer exposure time.
If you read the instructions in the test kit well, you will see that the manufacturer instructs you to check the result within five minutes.
So instead of getting a false pregnancy test result, spend a little and get yourself a new test kit to make sure you are getting the accurate result. One myth that is going around on the internet is that you can reuse a pregnancy test kit once it is completely dried up because the test strip can reabsorb the urine.
While the urine will indeed reabsorb through the strip and travel back just like it did when you took the first test, it will not give you an accurate result because, again, the chemicals have reacted, and they can no longer activate from the state they were in when you first used it- which was fresh.
The levels of the HCG increase every day of the pregnancy, and it doubles approximately every two days. Home pregnancy test kits can detect this hormone from one week after a missed period. Some tests are also able to detect HCG as early as the day after you missed your period, but most of them are not sensitive enough to give accurate results if taken too soon.
If this happens, then you have gotten a false positive pregnancy result. Whether you use it once or a hundred times, if you leave it to pass the result reading time, you will get a false pregnancy test result. This happens because the chemicals now have urine attached.
Long story short: These tests are super sensitive to a variety of factors. Exactly how HPTs detect hCG is a trade secret of sorts, but we do know that they all work similarly — through a chemical reaction between your urine and the hCG antibodies in the strip. This goes for the digital ones, too. Generally speaking, you should read the results of a pregnancy test about 5 minutes after you POAS pee on a stick in TTC-lingo or dip it in urine and then discard it — and no pulling it out of the wastebasket an hour later, either!
Evaporation may have created a second line by that point, potentially making for a confusing and heartbreaking false positive. Then, to accurately conduct that reaction again, you need to start fresh again with the same two agents.
So when your urine touches an HPT pee stick — either by you holding the stick mid-stream or dipping the stick into your collected urine — the reaction takes place. You need a new kernel.
Well, remember that water is still made up of chemical elements — hydrogen and oxygen — that can react with the test strip. Presumably, water will give a negative result we hope!
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