Mean glucose levels for specified A1C levels (37,43)
| A1C . | Mean plasma glucose* . | Mean fasting glucose . | Mean premeal glucose . | Mean postmeal glucose . | Mean bedtime glucose . | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| % (mmol/mol) . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . |
| 6 (42) | 126 (100–152) | 7.0 (5.5–8.5) | ||||||||
| 5.5–6.49 (37–47) | 122 (117–127) | 6.8 (6.5–7.0) | 118 (115–121) | 6.5 (6.4–6.7) | 144 (139–148) | 8.0 (7.7–8.2) | 136 (131–141) | 7.5 (7.3–7.8) | ||
| 6.5–6.99 (47–53) | 142 (135–150) | 7.9 (7.5–8.3) | 139 (134–144) | 7.7 (7.4–8.0) | 164 (159–169) | 9.1 (8.8–9.4) | 153 (145–161) | 8.5 (8.0–8.9) | ||
| 7 (53) | 154 (123–185) | 8.6 (6.8–10.3) | ||||||||
| 7.0–7.49 (53–58) | 152 (143–162) | 8.4 (7.9–9.0) | 152 (147–157) | 8.4 (8.2–8.7) | 176 (170–183) | 9.8 (9.4–10.2) | 177 (166–188) | 9.8 (9.2–10.4) | ||
| 7.5–7.99 (58–64) | 167 (157–177) | 9.3 (8.7–9.8) | 155 (148–161) | 8.6 (8.2–8.9) | 189 (180–197) | 10.5 (10.0–10.9) | 175 (163–188) | 9.7 (9.0–10.4) | ||
| 8 (64) | 183 (147–217) | 10.2 (8.1–12.1) | ||||||||
| 8.0–8.5 (64–69) | 178 (164–192) | 9.9 (9.1–10.7) | 179 (167–191) | 9.9 (9.3–10.6) | 206 (195–217) | 11.4 (10.8–12.0) | 222 (197–248) | 12.3 (10.9–13.8) | ||
| 9 (75) | 212 (170–249) | 11.8 (9.4–13.9) | ||||||||
| 10 (86) | 240 (193–282) | 13.4 (10.7–15.7) | ||||||||
| 11 (97) | 269 (217–314) | 14.9 (12.0–17.5) | ||||||||
| 12 (108) | 298 (240–347) | 16.5 (13.3–19.3) | ||||||||
| A1C . | Mean plasma glucose* . | Mean fasting glucose . | Mean premeal glucose . | Mean postmeal glucose . | Mean bedtime glucose . | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| % (mmol/mol) . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . | mg/dL . | mmol/L . |
| 6 (42) | 126 (100–152) | 7.0 (5.5–8.5) | ||||||||
| 5.5–6.49 (37–47) | 122 (117–127) | 6.8 (6.5–7.0) | 118 (115–121) | 6.5 (6.4–6.7) | 144 (139–148) | 8.0 (7.7–8.2) | 136 (131–141) | 7.5 (7.3–7.8) | ||
| 6.5–6.99 (47–53) | 142 (135–150) | 7.9 (7.5–8.3) | 139 (134–144) | 7.7 (7.4–8.0) | 164 (159–169) | 9.1 (8.8–9.4) | 153 (145–161) | 8.5 (8.0–8.9) | ||
| 7 (53) | 154 (123–185) | 8.6 (6.8–10.3) | ||||||||
| 7.0–7.49 (53–58) | 152 (143–162) | 8.4 (7.9–9.0) | 152 (147–157) | 8.4 (8.2–8.7) | 176 (170–183) | 9.8 (9.4–10.2) | 177 (166–188) | 9.8 (9.2–10.4) | ||
| 7.5–7.99 (58–64) | 167 (157–177) | 9.3 (8.7–9.8) | 155 (148–161) | 8.6 (8.2–8.9) | 189 (180–197) | 10.5 (10.0–10.9) | 175 (163–188) | 9.7 (9.0–10.4) | ||
| 8 (64) | 183 (147–217) | 10.2 (8.1–12.1) | ||||||||
| 8.0–8.5 (64–69) | 178 (164–192) | 9.9 (9.1–10.7) | 179 (167–191) | 9.9 (9.3–10.6) | 206 (195–217) | 11.4 (10.8–12.0) | 222 (197–248) | 12.3 (10.9–13.8) | ||
| 9 (75) | 212 (170–249) | 11.8 (9.4–13.9) | ||||||||
| 10 (86) | 240 (193–282) | 13.4 (10.7–15.7) | ||||||||
| 11 (97) | 269 (217–314) | 14.9 (12.0–17.5) | ||||||||
| 12 (108) | 298 (240–347) | 16.5 (13.3–19.3) | ||||||||
Data in parentheses represent 95% CI, unless otherwise noted. A calculator for converting A1C results into eAG, in either mg/dL or mmol/L, is available at http://professional.diabetes.org/eAG. *These estimates are based on ADAG data of ∼2,700 glucose measurements over 3 months per A1C measurement in 507 adults with type 1, type 2, and no diabetes. The correlation between A1C and average glucose was 0.92 (43).