Active Directory objectGUID Question

Hi quick question. I'm building an application which stores information about company employees, current and past in an SQL database. I need a UID and would like to use AD's objectGUID for reason's I care not to explain here, (it will just make my life easier).

My question is, though clearly stated that "The objectGUID property of on object never changes even if the object is renamed or moved."

I need to know whether, if an object is deleted, such as a user account is it possible that the objectGUID of that ID be reused by AD? In my ideal situation, no other new employee willl ever receieve the same objectGUID, but I have to be sure.

Thanks for you help