Hi there, I asume your asking because you think that your child maybe type1 diabetic. I'm not entirely sure what it should be for a child of that age, but I'm a diabetic type 2 and both my children had to be monitered when they were born for low blood sugar. When I asked thay told me that their sugar levels should not drop below 3 as my daughters was she was put on a glucose drip for a few days after she was born. I'm pleased to say she's a very happy 7 week old now with no ill effects. If you are at all concerned take her to your GP and get her checked over. Hope this helps Hayley Alexander 19 months and 7 week old Jennifer-May.