What should I do if my glucose tolerance test result is slightly higher than the normal range?

A slightly elevated glucose tolerance test result indicates impaired glucose tolerance, which requires intervention through dietary and exercise therapies to prevent progression to diabetes.

The glucose tolerance test (GTT), also known as the oral glucose tolerance test (OGTT), is a laboratory diagnostic method for diabetes. Clinically, it involves administering 75 g of oral glucose and measuring blood glucose levels at 1, 2, and 3 hours post-ingestion to determine whether glucose tolerance is abnormal. Normal reference values are: ≥10.0 mmol/L at 1 hour, ≥8.5 mmol/L at 2 hours, and ≥8.0 mmol/L at 3 hours.

Elevated GTT results warrant clinical attention and can be managed effectively via dietary and exercise interventions:

1. Dietary therapy: Patients should consult a nutritionist to assess their condition and develop an individualized dietary plan. Daily caloric intake is typically prescribed at 1,500–2,000 kcal, with a balanced and varied diet containing appropriate proportions of carbohydrates, fats, and proteins.

2. Exercise therapy: Patients are advised to engage in at least 30 minutes of mild- to moderate-intensity physical activity daily, performed 3–4 times per week.