High Fasting Sugar but Normal HbA1c: What Should I Check?

Experiencing high fasting sugar levels while having a normal HbA1c can be confusing. This discrepancy can arise due to various factors affecting your blood glucose levels over time. What this means: HbA1c measures your average blood sugar over the past 2-3 months, while fasting sugar reflects your glucose levels at a specific moment. A normal HbA1c suggests that your overall blood sugar management is within range, but high fasting levels may indicate insulin resistance or other factors affecting your overnight glucose control. What to observe or prepare: Track your blood sugar levels at different times of the day, including post-meal readings. This can help identify patterns and fluctuations. Additionally, monitor your diet, particularly carbohydrate intake and meal timing, as these can significantly influence fasting glucose levels. Prepare questions for your healthcare provider about potential causes of your high fasting sugar and whether further testing is needed. What not to assume: Don’t assume that high fasting sugar levels are not a concern just because your HbA1c is normal. This could indicate an early sign of insulin resistance or other metabolic issues that may require attention. When to seek help: Consult your healthcare provider if your fasting sugar consistently exceeds 130 mg/dL or if you experience symptoms such as increased thirst, frequent urination, or fatigue. These could be signs of worsening glucose control or other complications. What you can do next: Continue monitoring your blood sugar levels and maintain a food diary to share with your doctor. Discuss your findings during your next appointment to better understand your condition and explore potential management strategies. Sources: - Effectiveness of diabetes self-management education (DSME) in ... (https://pmc.ncbi.nlm.nih.gov/articles/PMC8129774/) - Insulin Resistance & Prediabetes - NIDDK (https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetes/prediabetes-insulin-resistance)