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Whether a pregnancy test turns out positive or negative, most women would agree that getting one can be one of the most nerve-wracking experiences they have or will be going through. And that’s normal. Because let’s face it, things can get a little confusing to understand and correctly interpret what the lines on the test actually mean. How Does Home Pregnancy Test Work? In general, an at-home pregnancy test is a simple way to find out if you’re pregnant before seeing a doctor. If you are not sure how to use one, here’s an Infographic on How To Use Home Pregnancy Test. This test works by detecting the levels of human chorionic gonadotropin (hCG) levels during the first trimester of pregnancy, which is a hormone the body produces during pregnancy. The test process itself is easy as it only requires users to urinate on the test stick and checking the results after a few minutes. But the results often can be confusing.  Some pregnancy test involves two lines: a control line and a test line. The control line should appear on every test (an indication that the pregnancy test is valid), but the test line appears only if there are some levels of hCG detected in your urine. If your pregnancy test result only reveals one line (the control line), it often means you’re not pregnant. If the test results reveal the control line and the test line, this may indicate a pregnancy, but it doesn’t necessarily have to be that way. The second line could be an evaporation line. What is an Evaporation Line? An evaporation line (evap line) is a slight streak that appears after a negative test has dried. Basically pregnancy tests are meant to be read three to five minutes after they are taken when the tests are still damp at the time of reading. This does not indicate that a woman is pregnant as the lines often occur when a person has checked the result too late or taken the test incorrectly. When an evaporation line appears, it is best to take another test for