Americans use mg/dl as the unit for measuring glucose levels. Most other countries use mmol/l. The relationship between the two is that 1mmol/l = 18mg/dl. I was interested to understand this relationship (as a former chemist) and also find out what it meant in practical terms. It is a bit sad, but here is my calculation (previously posted on diabetesdaily.com in response to a question): The unit mmol/l stands for milli-moles per litre. (or liter in the US, I believe). milli means a thousandth, so what is a mole (other than a small rodent-like animal). A mole is that quantity of a substance whose mass in grams is the same as its formula weight (atomic weight). Each molecule of glucose has 6 Carbon atoms, 12 Hydrogen atoms and 6 Oxygen atoms. A carbon atom weighs 12 units, a hydrogen atom weighs 1 unit and an oxygen atom weighs 16 units. These units are called relative atomic mass units (don't need to go into why). So the atomic weight of glucose is (6x12) + (12x1) + (6x16) = 180. Th
T1 Diabetic ramblings, with a special interest in the Abbott Freestyle Libre Glucose Monitor...and perhaps some totally unrelated musical thoughts.