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Factors Affecting the Accuracy of At-Home Pregnancy Tests

When you think you might be pregnant, every minute you have to wait to find out can seem like hours. A little impatience can lead to several test errors. Home pregnancy tests first developed in the 1970s allowed you to test for the early pregnancy indicator–the human Chorionic Gonadotropin (hCG)–in your urine. The tests are accurate when you follow all the instructions carefully. Mistakes in taking the test or interpreting the results account for the majority of false positive or negative results. When you take the test is as important as how you take it.