Standard fasting glucose and HbA1c tests fail to capture daily glycemic volatility. Continuous Glucose Monitors (CGMs) provide high-resolution real-time visibility into interstitial glucose dynamics and individual dietary response.
Why Glycemic Variability Matters
Rapid glucose fluctuations (postprandial spikes >140 mg/dL followed by reactive hypoglycemia) cause significantly greater vascular endothelial oxidative stress and advanced glycation end-product (AGE) formation than steady moderate elevations:
- Mean Amplitude of Glycemic Excursions (MAGE): Clinical benchmark for assessing daily glucose swings.
- Time in Tight Range (TITR: 70–120 mg/dL): Target >90% daily adherence for optimal metabolic longevity.