The earliest you can take a pregnancy test is generally around 6 days before your missed period (which is about 5 days before your expected period). Some sensitive pregnancy tests, like the Clearblue Early Detection test, can detect pregnancy this early by identifying low levels of the pregnancy hormone hCG. However, testing too early can result in a false negative because hCG levels may not be high enough yet to detect. For the most accurate result, it's usually best to wait until the first day of your missed period or later, ideally using the first morning urine when hCG concentration is highest. If testing early yields a negative result but pregnancy is still suspected, retesting a few days later is recommended.