A1C went from 7.4 to 5.6 over nine months and my prescriber was more interested in the fasting insulin, which I did not expect.
So the question, as narrowly as I can put it: why A1C lags the way it does, and what to look at in the meantime if you want to know sooner.
Numbers rather than impressions, if you have them.
marco_milano said:A1C went from 7.4 to 5.6 over nine months and my prescriber was more interested in the fasting insulin, which I did not expect.
My labs after 3 months on glycaemic control: A1C 5.4%, fasting glucose 79 mg/dL, fasting insulin 8 uIU/mL. My endo says these are "textbook perfect."
For context, my baseline A1C was 7.3% and fasting glucose was 114 mg/dL. The improvement has been dramatic and consistent.
sarah.morrison said:My labs after 3 months on glycaemic control: A1C 5.4%, fasting glucose 79 mg/dL, fasting insulin 8 uIU/mL.
Glycemic variability as the key metric for glycaemic control success: my coefficient of variation (CV) on CGM dropped from 41% to 22%. Target is <36%, with <30% being ideal.
Why this matters more than average glucose: large glucose swings cause oxidative stress, endothelial damage, and promote advanced glycation end-products (AGEs). A flat glucose line at 95 mg/dL is metabolically healthier than oscillating between 60 and 160, even if the average is the same.
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Shop Reference Standardsmarco_milano said:A1C went from 7.4 to 5.6 over nine months and my prescriber was more interested in the fasting insulin, which I did not expect.
Can confirm. Same sequence, different timescale.
Adding the clinical framing, because it changes how the question reads.
Complete metabolic panel trending on glycaemic control — sharing because comprehensive data helps everyone:
| Test | Baseline | Month 3 | Month 6 | Month 12 |
|---|---|---|---|---|
| Glucose (fasting) | 112 | 106 | 92 | 84 |
| Insulin (fasting) | 18 | 14 | 8 | 7 |
| HOMA-IR | 4.5 | 3.3 | 2.0 | 1.1 |
| Uric Acid | 8.0 | 6.2 | 5.9 | 4.8 |
The insulin resistance improvement (HOMA-IR) is what my endo focuses on most. Going from 4.5 to near 1.0 is a metabolic transformation.