Every country has a different requirement for certification for just about everything. Your actual degree will most definitely "count" but you may have to take a separate test to show your schooling here went over the same topics and went as in depth as they do. Sometimes credit hours required might not add up and additional training may be required, but I don't know for sure. Usually that only matters when going on for a higher degree in another country (i.e. getting your PhD elsewhere).

I imagine its kind of like becoming a lawyer. You have to take the bar exam for each state you want to practice law in. I think, especially for such a specialized area, you would most likely need to take a test like this. Where are you thinking about?