Diabetes diagnosis and monitoring alternatives to HbA1c

Thanks for sharing—good topic. A1c is useful, but it has blind spots. Two points I agree with: 1) HbA1c can mislead in anemia, kidney disease, iron/B12 issues, hemoglobin variants (common in South Asians), pregnancy, and with rapid glucose swings; 2) earlier detection and tracking beyond A1c helps. What’s better “than” A1c depends on the question: - To diagnose earlier: fasting glucose (≥126 mg/dL), 2‑hour OGTT after 75 g load (≥200), and/or fasting insulin/HOMA‑IR for insulin resistance in select cases. OGTT is the most sensitive for early dysglycemia. - To monitor day‑to‑day control: Time‑in‑Range (TIR) from a CGM adds real‑world detail (target TIR ≥70%, lows <4%). A1c ~7% ≈ average glucose ~150 mg/dL, but two people with the same A1c can differ wildly (125–175 vs 50–225 mg/dL). - When A1c is unreliable: use fructosamine or glycated albumin (shorter window ~2–3 weeks) plus SMBG/CGM. Bottom line: don’t throw A1c out—it predicts complications and guides therapy—but pair it with fasting/OGTT for diagnosis and CGM/TIR (or structured fingersticks) for management, especially in South Asians prone to post‑meal spikes and central insulin resistance.