Negative Pregnancy Test Turned Positive After Several Hours – Why?

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Negative Pregnancy Test Turned Positive After Several Hours – Now, taking a pregnancy test is comparatively straightforward: you just pee on a stick and then it shows you whether you are pregnant or not.

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But your pregnancy test results might change in just a matter of a few hours. But before we find out what can cause a pregnancy test result to change from negative to positive over a few hours, we have to first understand how pregnancy tests work.

Negative Pregnancy Test Turned Positive After Several Hours – Why?

Negative Pregnancy Test Turned Positive After Several Hours

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HOW DO THE PREGNANCY TESTS WORK?

Home pregnancy tests are precise tools used for detecting pregnancy and pregnancy tests work by testing your urine for the attendance of a hormone called human chorionic gonadotropin (hCG).

The hCG hormone starts to be produced after implantation occurs- the procedure where a fertilized egg implants into the lining of your uterus.

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It is through this connection, that the fertilized egg (or blastocyst) simply receives the nutrients and blood supply it needs to produce.

Now, If your hCG levels are high enough in your urine (usually around 2 weeks after conception), the pregnancy test will display a positive result.

Positive pregnancy test results can be shown by a cross, two lines (a test line and a control line), or even the word “pregnant”- simply depending on the kind of pregnancy test you select.

WHY DID MY PREGNANCY TEST RESULTS CHANGE FROM NEGATIVE TO POSITIVE IN NUMEROUS HOURS? 

  • 1) YOU LEFT YOUR TEST FOR TOO LONG

It is significant to always follow the pregnancy test instructions, as not following the pregnancy test instructions, or following them imperfectly, can simply give you improper pregnancy test results.

Pregnancy test results are only legal for a certain amount of time- typically around 10 minutes- so if you leave your pregnancy test out for numerous hours, and notice that your negative test result has altered to a positive test result, you should just disregard the changes, as they are most probable imprecise.

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This is because, over time, the urine within the result window begins to dry- which causes an evaporation line (faint line) to simply appear. This can effortlessly be mistaken for a faint positive pregnancy test result.

  • 2) YOUR URINE WAS DILUTED

During early pregnancy, if you simply have taken a pregnancy test and received a negative result, and took another pregnancy test and established a positive pregnancy result several hours later, it might be due to the amount of fluids you are drinking.

If you drink a lot of fluids, it can dilute your urine simply decreasing your hCG levels in your urine, which can cause a negative pregnancy test effect to be shown.

  • 3) EVAPORATION LINE WAS MISTAKEN FOR A FAINT POSITIVE RESULT

Evaporation lines can be irritating things, they can look like a positive faint test line, whilst they are not a positive result at all!

Evaporation lines are the product of the urine drying on the home pregnancy test, which simply causes the results window to show a faint line.

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If you are unaccustomed to evaporation lines, you might mistake them for a positive test line. We also have an article on evaporation lines vs faint positives to help you to tell the alteration. 

  • 4) IT WAS A FALSE POSITIVE RESULT

It might be that the pregnancy test result you received later on in the day may have been a false positive. False positive pregnancy test results are produced by a variety of things, including:

  • Following the pregnancy test instructions incorrectly
  • Using an perished pregnancy test
  • Using an unreliable brand
  • Other unknown reasons.

HOW CAN YOU AVOID INCORRECT PREGNANCY TEST RESULTS?

  • Check the Expiry Date. If you are simply taking a pregnancy test, it is important to make sure that the pregnancy test has not expired. Now, once a pregnancy test expires, the antibodies with a hin pregnancy test, which simply detects the hCG, begin to break down. This can simply cause a negative result to be shown when you are really pregnant.
  • Follow the instructions carefully. Following the pregnancy test instructions sensibly is crucial to accept accurate test results. It is significant to note whether you should take a urine sample and dip the pregnancy test, pee straight onto the pregnancy test, when you should read the results, and when the results should be disallowed.
  • Take the pregnancy test in the morning. Now, taking a pregnancy test with the first morning’s urine can benefit you to receive the most accurate pregnancy test results- this is because your hCG levels are the most concentrated, so if you are still in early pregnancy, you are more expected to receive a correct positive test result.
  • Wait until your hCG levels are high enough. We simply know how difficult the two-week wait can be however, it is there for a reason! Now, taking a pregnancy test kit too early can give you a negative result, even when you really are pregnant.

If you are hesitant about your pregnancy test results, you need to take a test again in a few days’ time to avoid inaccurate results.

If you simply received a positive test result and then negative 2 hours later, we have an article on that too which you can read.

If you have had a faint positive pregnancy test and then negative the next day, there are amply of reasons for that too. 

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Conclusion:

We have shared everything about pregnancy test results to change from negative to positive over a few hours in this article for you if the info that we shared above helped you in any way then do share it with others.