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Table 1 Values of plasma glucose (venous blood) for the diagnosis of diabetes mellitus* and other categories of hyperglycemia according to DDG criteria [30]

From: First-line antihypertensive treatment in patients with pre-diabetes: Rationale, design and baseline results of the ADaPT investigation

   mg/dl mmol/l
   Fasting   2 h OGTT Fasting   2 h OGTT
NGT Normal glucose tolerance < 100   < 140 < 5.6   < 7.8
IFG Impaired fasting glucose 100–125   - 5.6–6.9   -
IGT Impaired glucose tolerance < 126 and 140–199 < 7.0 and 7.8–11.0
DM Diabetes mellitus ≥ 126 and/or ≥ 200 ≥ 7.0 and/or ≥ 11.1
  1. IGT classification according to 2 h OGG is only appropriate if the NGT value is below the threshold value for diabetes mellitus.