I heard of an unofficial "Football Test":
Take a football, stand as far away as you can, and chuck the thing at the suspect hive hard enough to irritate the girls. The bees will be attracted to the foreign leather object and sting it. AHBs will have literally THOUSANDS and THOUSANDS of stings left in the ball, whereas normal europeans will leave waaaaay less.
P.O.I.: This is not my "test" and I don't recommend this for obvious reasons...safety, substantial bee death, disturbing hive, etc!! Plus I'm new at this and am still earning my wings. However, a friend of mine told me about it and I thought it was an interesting approach!!
Makes intuitive sense, though...