There are a lot of different depression tests online. Some of them I feel are more reliable than others. But I know that the tests are not a definite diagnosis. Only a doctor can do that. I get some satisfaction from the tests though when I mark that I am having thoughts of death and then a warning box pops up saying that I need to get help immediately. I like it because at least somebody cares about me, even though it is only the makers of the test which do not know me. Just to make things clear, I am not a danger to myself or others.