Hi. I'm a newbie. Looking for information on how BGL is measured in USA. I keep seeing reference to numbers in the range 50 - 400. What is the conversion for us in Australia? i.e. less than 4.0 = low / 4.0 - 8.0 = normal / over 8.0 = high / over 15.0 = uh oh & test for ketones. Thank you in advance.