A psychologist will administer one. Ask one.
If they think you're of normal or above, you'll probably have to push to get one done, as they often don't bother (it has more of a bearing and benefit when you're a child at school if it shows up specific learning difficulties associated with an ASD).
To add, I appear smart and learned. I'm not that bright academically (to the surprise of...everyone on the 'net. In person, I've always been seen as slow by my peers), except for a small area of skill which makes said appearance.