The normal fasting blood sugar level for any child under 6 is between 80 and 180 milligrams per deciliter; however, WebMD indicates a childﾒs blood sugar reading can vary greatly. The parentﾒs goal, when the childﾒs body is unable to regulate sugar levels, is to help maintain it within range.
Food, exercise, growth, medication and illness are some of the factors that affect a childﾒs glucose levels. Parents need to test blood sugar levels regularly to avoid dangerous blood sugar levels. When the child is too young to express how he feels, testing becomes even more important in maintaining the sugar levels, according to WebMD.