| Blood glucose (mmol/L) | 100 g OGTT | 7 5g OGTT | ||
| O’Sullivan-Mahan Whole Blood [11] | NDDG Plasma-Autoanalyzer [11] | Carpenter-Coustan Plasma-Glucose Oxidase [12] | IADPSG Plasma Enzymatic [13] | |
| Fasting blood glucose | 5 | 5.8 | 5.3 | 5.1 |
| 1 hour after taking sugar | 9.5 | 10.6 | 10 | 10.0 |
| 2 hours after taking sugar | 8.5 | 9.2 | 8.6 | 8.5 |
| 3 hours after taking sugar | 7 | 8.1 | 7.8 | / |