I did the Aspie-quiz ( http://www.rdos.net/eng/ ). Here's what I got:
Thank you for filling out this questionnaire.
Your Aspie score: 136 of 200
Your neurotypical (non-autistic) score: 65 of 200
You are very likely an Aspie
I guess that answers the question, at least for now. Though I must admit there is a tendency to want to choose what you think are the right answers to get what you want, kind of like embellishing on a resume. I tried to avoid that bias to the best of my abilities.
I think the test would be better if you only saw one question at a time and could not go back, and with many trick/meaningless questions, or the same question asked in different ways in order to mitigate bias tendencies. And maybe a time limit for each question.
In an actual diagnosis, do the doctors only go by questionaire, or are there other more tangible measurements made as well?