My 13 year old son has fbs 106. One month before it was 120 mg/dl. And ppbs 99. I think the decrease in blood sugar is due to diet and exercise. His hba1c is 4. This .whats the cause of rise in fbs. Is he in a pre diabetic stage. I want answer from an endocrinologist.

Dr. Prabhakar Laxman JatharEndocrinologist46yrs exp

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Hello, Thanks for the query. Fasting glucose 106 mg, and 120 mg, does fall in the pre-diabetic category. But there is also a condition called Impaired Fasting Glucose Intolerance. PP glucose & HbA1c% both are fine. Hence he is not having even prediabetes. But better to check his fasting and PP once a year or so. Another important aspect is that he should not become over weight. Thanks.  

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