Some laboratory results are available as early as same day of collection; more esoteric tests are usually available within a few days. Patients over 18 years of age can access their results through MyChart.
Understanding your results can sometimes be difficult. The very best way to understand what your results mean to you, is to have a trained health professional review them in the context of your history and lifestyle. This is usually the person who ordered you to have the testing done. In the meantime, you can learn more about lab tests by visiting the website: http://www.labtestsonline.org