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HbA1c test (%) & estimated Average Glucose (mg/dl)
eAG for plasma calibrated meters
Switch to DCCT data correlation       View all charts
HbA1c 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9
Glucose 68 71 74 77 80 82 85 88 91 94
HbA1c 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9
Glucose 97 100 103 105 108 111 114 117 120 123
HbA1c 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9
Glucose 125 128 131 134 137 140 143 146 148 151
HbA1c 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9
Glucose 154 157 160 163 166 169 171 174 177 180
HbA1c 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9
Glucose 183 186 189 192 194 197 200 203 206 209
HbA1c 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9
Glucose 212 214 217 220 223 226 229 232 235 237
HbA1c 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9
Glucose 240 243 246 249 252 255 258 260 263 266
HbA1c 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9
Glucose 269 272 275 278 280 283 286 289 292 295
HbA1c 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9
Glucose 298 301 303 306 309 312 315 318 321 324
HbA1c 13.0 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9
Glucose 326 329 332 335 338 341 344 346 349 352

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Chart posted for general educational use.  Data represent averages.  Individual values may vary.  

Consult your healthcare professional for interpretation of test results.

Conversion: HbA1c = (46.7 +Plasma Glucose) / 28.7
Plasma Glucose = (28.7 * HbA1c) - 46.7

Reference:
David M. Nathan, MD, Judith Kuenen, MD, Rikke Borg, MD, Hui Zheng, PhD, David Schoenfeld, PhD, Robert J. Heine, MD "Translating the A1c Assay Into Estimated Average Glucose Values," Diabetes Care 31:1473-1478, 2008.  Abstract

Home meter several years old?  It may read whole blood glucose.  Click here to convert HbA1c to whole blood glucose.  More info on plasma glucose vs. whole blood glucose.

What reading is desirable?  Your glycemic target should be individualized for you and reflect an agreement between you and your clincian.  Click here for the joint position of the American Diabetes Association and the European Association for the Study of Diabetes.

Page created September 14, 2000 and last updated May 1, 2012

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