Why can you check a pregnancy test after 10 minutes?

This usually ranges between a couple of minutes up until 10 minutes later. If you see a positive result beyond this time frame, you may be left second-guessing the results. However, the false-positive reading, in this case, is due to something called an evaporation line.

What happens when you read a pregnancy test after 10 minutes?

The reason for this is due to the urine evaporating if left for too long; it can leave a faint line which can be mistaken as a positive test. It is recommended to not read a pregnancy test after the recommended time frame (10 minutes) as most brands have a possibility of evaporation lines.”

Can a pregnancy test show positive if it sits too long?

If you let the test sit too long the the test may show a false positive result. A false positive is when the tests shows you are pregnant when you actually are not. Pregnancy tests work by detecting a hormone called human chorionic gonadotropin, HCG.

Can a pregnancy test turn positive after 5 minutes?

Some pregnancy tests have instructions to check results after two minutes. Others have instructions to check results after five minutes. The risk of a false positive is higher when you read your results after the reaction time.

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Can a faint line appears after 10 minutes?

Faint Test Lines

If you follow all of the instructions correctly, you may notice a thin, faint test line that appears within a few minutes. It can seem at first that the line is too faint to count, but after 10 minutes, it darkens.

Is it a faint positive or an evaporation line?

Share on Pinterest An evaporation line does not indicate a positive result. An evaporation line is a slight streak that appears where the positive line on a pregnancy test should be. Evaporation lines are colorless streaks, not faint lines.

Does evaporation line get darker?

Evaporation lines on pregnancy tests are generally colorless, but not always. There are some evaporation lines that do have color—either a light blue or light pink. The color, however, is very faint and not as dark as the color of the control line. The evaporation line can also sometimes appear greyish.

How many minutes do you wait for a pregnancy test?

Place the pregnancy testing stick on a flat, dry surface with the “result window” facing up. The instructions will tell you how many minutes to wait for the results to appear. This can be anywhere from one minute to five minutes, though some home pregnancy tests can take up to 10 minutes to give you an accurate result.

Are evaporation lines Blue?

Furthermore, an evaporation line is more easily confused with a positive on a blue test, since its dull grayish imprint is similar to that of a light blue line. Determining whether a test line is truly positive or the result of evaporation can cause distress.

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When do evaporation lines appear?

An evaporation line (or evap line) on a pregnancy test can look like a very faint, discolored positive result—but actually isn’t one. The line appears only after your pee has evaporated (hence the name) and may mean that too much time has passed between taking the test and checking your result.