HI,
The one thing I know for sure os that they will have started you on a "too low" dose, on purpose. The idea being that they start you low, and build you up slowly...rather than giving what they think you may actually need, and risk over estimateing, and having you crash with low blood sugars. Test as regularly as possible...and also take note of the amount of carbohydrate that you eat. For a few days, while you [lay with your levels, it may be worth sticking to the same amounts of the same foods...so the only variation is your insulin levels. That high reading could have been caused by eating lots of carbs? There are various approaches to mainting the best blood sugar, but we would all agree, that the more carbs you east, the more insulin you need....so keeping this consistent for a few days while you start to sort things out might be an idea? Then, when you getthe lantus levels stabalised, you can look at a ratio for food insulin, that works for you. This can take a while, so please don't get disheartened!