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HbA1c Test Results (%) & Their Plasma Blood Glucose Equivalents (mg/dl)
DCCT data correlation
Switch to estimated Average Glucose (eAG) 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 65 69 72 76 79 83 86 90 93 97
HbA1c 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9
Glucose 101 104 108 111 115 118 122 126 129 133
HbA1c 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9
Glucose 136 140 143 147 151 154 158 161 165 168
HbA1c 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9
Glucose 172 175 179 183 186 190 193 197 200 204
HbA1c 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9
Glucose 207 211 215 218 222 225 229 232 236 240
HbA1c 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9
Glucose 243 247 250 254 257 261 264 268 272 275
HbA1c 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9
Glucose 279 282 286 289 293 297 300 304 307 311
HbA1c 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9
Glucose 314 318 321 325 329 332 336 339 343 346
HbA1c 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9
Glucose 350 353 357 361 364 368 371 375 378 382
HbA1c 13.0 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9
Glucose 386 389 393 396 400 403 407 410 414 418

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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 = (Plasma Blood Glucose + 77.3) / 35.6
Plasma Blood Glucose = (HbA1c * 35.6) - 77.3

Reference:
Curt L. Rohlfing, BES, Hsiao-Mei Wiedmeyer, MS, Randie R. Little, PHD, Jack D. England, Alethea Tennill, MS and David E. Goldstein, MD "Defining the Relationship Between Plasma Glucose and HbA1c, Analysis of glucose profiles and HbA1c in the Diabetes Control and Complications Trial," Diabetes Care 25:275-278, 2002.  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 blood 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 October 30, 2009 and last updated May 1, 2012

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