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carefulobserver · 21/09/2012 19:04 Ok, so I'm not TTC but thought I was possibly pregnant. Phoned the doctor to ask if I could get a test there but they say they don't do pregnancy tests (apart from one that takes 3 weeks to come back - WTF?) So I bought a cheap pack of 2 pregnancy tests from boots. It said to pee on the stick but not to get the results window wet. Turns out I'm not good with aim and both results windows went pale purple. One line appeared on the control (round) window though and none on the other one - a negative under normal circumstances. It says don't pee on the results window but doesn't say why not. It has a frequently asked questions bit, one question being is there anything that might invalidate the test. It mentions drinking alcohol, being on fertility drugs but nothing about peeing on the test window by accident. In which case why are they saying don't pee on it? It says if the line comes up in the control window the test has worked. But I'm not sure. I will use the other test and pee into a cup (not very good at that either!) but will have to wait until I need the toilet again. Stressful! Does anyone know if this can invalidate the result?? Please or to access all these features Flisspaps · 21/09/2012 19:11 No idea. Drink lots, try test 2. Please or to access all these features carefulobserver · 21/09/2012 19:32 Was really hoping to have a few massive glasses of wine but think I probably shouldn't now :-( Does noone else know anything about this? Please or to access all these features Splinters · 21/09/2012 19:37 Maybe because wee could seep in under the plastic window and make the dye run? No idea really. But I definitely recommend weeing in a pot and then sticking the test in that instead! Please or to access all these features Splinters · 21/09/2012 19:38 Oh sorry, you were going to do that already.. Please or to access all these features panicnotanymore · 21/09/2012 19:41 No idea - but if your are doing the second test use the first pee of the day tomorrow. If you drink loads now you'll dilute the hormones in your wee and might get a false negative. Please or to access all these features QueenofJacksDreams · 21/09/2012 19:50 "Human error can cause both a false positive and false negative pregnancy test result. The most common human errors include not allowing enough urine to be absorbed onto the testing stick and reading the evaporation line as a positive test result. The evaporation line is a thin grey line that can occur on the test result stick when the urine passes over the testing window. If the home pregnancy test is read too late, the result could also appear to be positive rather than negative." Da-Dah! Google strikes again  Please or to access all these features HaveALittleFaith · 21/09/2012 21:36 As an expert POASer after a long time TTC, my advice would be to pee into something first - Doritos salsa jar is good! But an old mug, cosmetic pot lid etc. I would hold off on the wine until you've done the test. Please or to access all these features EarnestDullard · 21/09/2012 21:40 Agree with panicnot, wait till tomorrow morning. The hormones will be stronger then and you'll get a more accurate result. Please or to access all these features Please create an account To comment on this thread you need to create a Mumsnet account. Active Watching Home Search When you take a pregnancy test your biggest concern is likely the accuracy of the result. Many people share this worry and it can linger even after they get an answer. While pregnancy tests are generally accurate, they can produce errors. There are several mistakes people make when they take a home pregnancy test that can lead to an inaccurate result. There are two categories of errors when taking a home pregnancy test: those related to timing and those related to interpretation.
Take the Test at the Right TimeDeciding when to take a home pregnancy test used to be simple: you waited until the day you missed your period and then you took a test. Today, you can get a pregnancy test that claims to tell you if you're pregnant before you've missed your period. While these tests can produce an accurate result, it depends on the person. Not every person who is pregnant will have the same levels of hCG in their urine. This error isn't inherent to the test, but rather, the timing of taking the test. Read the Results at the Right TimeMost home pregnancy tests have explicit directions for taking the test and reading the results. The tests will usually give you the exact timeframe in which to look at the test to get your result. Don't Look Too SoonAs the urine travels through the indicator window it might look like both lines are present, or that a plus sign is present. However, this does not mean that you are pregnant—it simply means that the test is working. You must wait until the end of the time allotted in the instructions to read the results of your test—which is usually one or two minutes. Use a stopwatch or a timer app on your phone to keep track. Don't Look Too LateWhile you don't want to read the results of your pregnancy test too early, you also don't want to way too long. If you take a test when you wake up, then hop right in the shower, you might get on with your day without checking the test again. The instructions will usually give you the window in which the test results will be accurate—usually about five minutes. After this time has gone by, the test might produce a faint positive when in fact there was no hCG detected in your urine. If you've read the results within the timeframe in the instructions and decide to keep the test, don't read into any change in the result in the hours or days after you take it. Confirm the ResultsThere are very few instances where a positive pregnancy test is wrong. A false positive pregnancy test is more likely to be caused by user error rather than a problem with the test. A negative result, on the other hand, may happen if you took a test too soon. A Positive ResultIf you are not pregnant, a false positive pregnancy test result is unlikely. The more likely explanation is that you had a chemical pregnancy (which produces enough hCG to turn a pregnancy test positive but miscarries shortly after) or a very early miscarriage. If you get a positive pregnancy test, assume that you are pregnant (which includes making an appointment with your health care provider to have the result confirmed). A Negative ResultThere are some situations where you would want to take another pregnancy test after getting a negative result. If the negative result was unexpected or you still do not have your period within a week of taking the test, you will want to retest. Sometimes, a negative test might not truly be a negative test—it might just be early for the test to turn positive. This is why most pregnancy tests recommend retesting after your body has had more time to produce detectable amounts of hCG in your urine. A Word From VerywellThere are several reasons that home pregnancy tests can produce inaccurate results. The good news is, these errors can be avoided if you follow the instructions carefully. While most errors are related to user mistakes and not a problem with the test itself, purchasing a quality test makes it less likely it will have defects or be expired. If you get a test result that is unexpected, follow the recommendations provided by the test for retaking it (usually within a week). It's also important that you contact your health care provider to confirm the result you get with a home pregnancy test. Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
Additional Reading
By Robin Elise Weiss, PhD,
MPH Thanks for your feedback! What happens when you pee on the window of a pregnancy test?Evaporation lines are common and can occur with any pregnancy test. An evaporation line is a line that appears in the results window of a pregnancy test as the urine dries. It can leave a faint, colorless line. If you're not familiar with evaporation lines, you might see this line and think you're pregnant.
Can peeing on the window of a pregnancy test cause a false negative?A false negative on a home pregnancy test is possible, but extremely unlikely. As long as your urine got on the test's absorbent strip, it should be accurate. You can always take another test if you're worried you might have missed.
Can you mess up a pregnancy test?If you think you're pregnant, the test result is negative and you've tested from the day of your expected period, test again three days later. If the result is still negative, talk to your doctor. So, yes, you can take a pregnancy test wrong — but it's not likely if you follow the instructions carefully.
What happens if you pee on a pregnancy test longer than 5 seconds?Five seconds feels a bit longer when aiming your pee, but pulling the stick away too quickly or not leaving it in your urine stream long enough can affect the validity of the result. If you choose to dip, use a clean, dry container stable enough to hold the test and urine without tipping.
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What if i accidentally pee on the pregnancy test window
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