There are a few simple steps to access and complete the QuickScreen dyslexia test for adults:. In the event that you are issued with more than one test then please note that only the first one that you do will be valid and the additional test will be deleted. This has occasionally occurred on some browsers and is being corrected. It is important to make sure you are taking a dyslexia test that is backed up by research. Our online dylexia testing systems have been used by over one million users to screen for dyslexia and learning difficulties.