What Causes Multiple Invalid Pregnancy Tests??

If the control window has a dark line and the results has nothing, then you are probably not pregnant. The tests I take only show a line in the results window if you are pregnant. As long as the control window is showing a line, the test is valid.

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Get a digital test. there is no guess work, it will either say the word pregnant or not pregnant. I found it wasn't that much more expensive and was worth the extra piece of mind, no faint lines and guessing, and there are usually 2 tests to a kit.

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Well i'm not so sure the test in invalid. If the control window shows the control line and then there is nothing in the test window that just means the test was negative not invalid. An invalid test would be if there was nothing showing up in for the control.....like the whole test was completely blank after you peed on it. I'm not saying your not pregnant.....you just might not be far enough a long to get a positive but again if there is a control line and no other line that is just a negative result.

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I hate to question your reading of the tests, but make sure you have thoroughly read the instructions for this particular test, they all are different. Some have a vertical line in the control window with a horizontal line in test for negative and horizontal plus vertical lines for a positive result. Others have a line in the control window and no line in the test window for negative and one line for positive. Some have only one window with one line meaning negative and two lines meaning positive. Maybe try a different brand, maybe one that gives a digital answer of yes or no/pregnant or not pregnant. It is rare to get an invalid response, especially on more than one test. But maybe it was just a whole bad batch of them. I hope you get a positive in the morning.

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I only had that happen to me once with my 3rd child I peed too much on the stick so I peed in a clean disposable cup then dipped the stick in the cup for the recommended time then layed it flat it was positive.

could be you didn't pee on the stick long enough, try peeing in a clean cup and dipping it in there for a few seconds instead.

I got false negs with both of my girls and one invalid. It could be not enough urine as you said or some got into the control section. Try another brand , like the digital ones or first response. First thing in the morning is best especially if you have low hct levels. Also, make sure to hold it in the stream from the begining, the correct length of time, and not to splash into control. Then lay flat. Or pee into a small cup and dip tester into it. Then lay flat.

Still not sure see the doc for a blood test. Either way GOOD LUCK!

I just wanted to suggest to you to get a pink-die test, and not digital. Digital tests have a high rate of false positives, that can be devastating.

Here's an interesting website that talks about all this stuff at length.
www.peeonastick.com

I pray you're pregnant!

I know what you are talking about. It went through the control window and you got a line, but nothing on the results side. No positive or negative. This happened to me before. I chalked it up to a bad batch of tests...because all three in the box turned out like that. I bought another brand and tested the next day and got my results. When I asked my OB about it, he said like anything you buy, sometimes they are just defective.

I would think maybe pee in a cup and dip it if it keeps coming back invalid when peeing actively on it...also, maybe the box is bad if they all came from the same box. Best wishes and good luck!