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Chart no. 13

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HbA1c test (mmol/mol) & estimated Average Glucose (mmol/L)
IFCC HbA1c & eAG for plasma calibrated meters
Switch to NGSP HbA1c (%)       Switch to DCCT data correlation       View all charts
HbA1c 20 21 22 23 24 25 26 27 28 29
Glucose 3.7 3.9 4.0 4.2 4.3 4.5 4.6 4.8 4.9 5.0
HbA1c 30 31 32 33 34 35 36 37 38 39
Glucose 5.2 5.3 5.5 5.6 5.8 5.9 6.1 6.2 6.4 6.5
HbA1c 40 41 42 43 44 45 46 47 48 49
Glucose 6.6 6.8 6.9 7.1 7.2 7.4 7.5 7.7 7.8 8.0
HbA1c 50 51 52 53 54 55 56 57 58 59
Glucose 8.1 8.2 8.4 8.5 8.7 8.8 9.0 9.1 9.3 9.4
HbA1c 60 61 62 63 64 65 66 67 68 69
Glucose 9.6 9.7 9.8 10.0 10.1 10.3 10.4 10.6 10.7 10.9
HbA1c 70 71 72 73 74 75 76 77 78 79
Glucose 11.0 11.2 11.3 11.4 11.6 11.7 11.9 12.0 12.2 12.3
HbA1c 80 81 82 83 84 85 86 87 88 89
Glucose 12.5 12.6 12.8 12.9 13.0 13.2 13.3 13.5 13.6 13.8
HbA1c 90 91 92 93 94 95 96 97 98 99
Glucose 13.9 14.1 14.2 14.4 14.5 14.6 14.8 14.9 15.1 15.2
HbA1c 100 101 102 103 104 105 106 107 108 109
Glucose 15.4 15.5 15.7 15.8 16.0 16.1 16.2 16.4 16.5 16.7
HbA1c 110 111 112 113 114 115 116 117 118 119
Glucose 16.8 17.0 17.1 17.3 17.4 17.6 17.7 17.8 18.0 18.1

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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: IFCC HbA1c = (10.93 * [(2.59 + Plasma Glucose) / 1.59]) -23.5
Plasma Glucose = (1.59 * [(0.09148 * IFCC HbA1c) + 2.152]) - 2.59

References:
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
International Federation of Clinical Chemistry (IFCC) Standardization of HbA1c, National Glycohemoglobin Standardization Program (NGSP), http://www.ngsp.org/   PDF

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 October 30, 2009 and last updated May 1, 2012

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