In short: yes.

But you need to be in a certain frame of mind to be completely unconscious or oblivious to the fact that your not in your body anymore.

Lucid dreams are easy to separate from astral because you can control what happens there. If you want something, think of it materializing in front of you while you think your in a dream, if it happens then its a dream.

If it doesn't then pinch yourself, if you feel no pain and your hand goes through where your arm is meant to be, its most likely an AP.

Though these aren't full proof methods, it works for a lot of people.