| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Gestational diabetes - Screening |  |  |  |  |
| 3 | Condition | 2-hour glucose | Fasting glucose | HbA1c | HbA1c |
| 4 | Unit | mmol/l(mg/dl) | mmol/l(mg/dl) | mmol/mol | DCCT % |
| 5 | Normal | <7.8 (<140) | <6.1 (<110) | <42 | <6.0 |
| 6 | Impaired fasting glycaemia | <7.8 (<140) | ≥6.1(≥110) & <7.0(<126) | 42-46 | 6.0–6.4 |
| 7 | Impaired glucose tolerance | ≥7.8 (≥140) | <7.0 (<126) | 42-46 | 6.0–6.4 |
| 8 | Diabetes mellitus | ≥11.1 (≥200) | ≥7.0 (≥126) | ≥48 | ≥6.5 |

Question: How is the diagnosis of GDM determined? 
Answer: When the plasma glucose level is found to be higher than 126 mg/dl (7.0 mmol/l) after fasting, or over 200 mg/dl (11.1 mmol/l) on any occasion and if this is confirmed on a subsequent day, the diagnosis of GDM is made and no further testing is required.