.

Correspondingly, what does it mean when a book comes up on a pregnancy test?

Book Error - an error has occurred during testing. It may be that: The Absorbent Sampler was not kept pointing downwards or the test was not laid flat after urine was applied. Too much or too little urine was applied. You should test again using a new test taking care to follow the instructions.

Additionally, what is the control window on a pregnancy test? Most urine pregnancy tests have a “control” window and another window that is the “results” window. When this line or other symbol appears in the control window it ensures that the test is working properly.

One may also ask, is it possible to reuse a pregnancy test?

No, you cannot reuse any pregnancy test. They are use HCG strips, which can work only once. Even if the test kit hasn't been used and it comes in contact with the atmosphere, it gets spoiled, and you can't use it.

What does 3+ on pregnancy test mean?

It's like 2 tests in 1 - it first detects if the pregnancy hormone is present with over 99% accuracy from the day of your expected period, and if you are pregnant, it ALSO indicates how many weeks since conception occurred 1-2, 2-3 or more than 3 weeks (3+).