Well test are sort of subjective and cannot provide one with a specific diagnoses of any kind. However based on some of your posts it seems likely, since it seems like you've been having trouble with feeling depressed....and from what I understand its rather ongoing.

Most people self diagnoses in a way before getting a real diagnoses...at leas people speculate what the problem is before going to see a professional really. But yeah only way to get an official diagnoses is go to a professional...but if you've been having symptoms of depression for any significant period of time there is a good chance you'd qualify for a diagnoses.