TempoLife › Fonctions › La glycémie expliquée › after-eating-2h
Two hours after eating — reference ranges
The post-meal value that matters diagnostically: by two hours, glucose should be most of the way back down.
| Bande | mmol/L | mg/dL | Ce que cela signifie |
|---|---|---|---|
| Normal | under 7.8 | under 140 | Two hours after a meal (or after the 75 g oral glucose tolerance test), a healthy response is back under 7.8 mmol/L. |
| Impaired glucose tolerance | 7.8-11.0 | 140-199 | "Prediabetes" by the two-hour criterion: the body clears the glucose, but slowly. |
| Diabetes | 11.1 or above | 200 or above | Two hours after a 75 g glucose load, 11.1 mmol/L or higher meets the WHO criterion for diabetes. |
Le lire en contexte
The two-hour value is the one the oral glucose tolerance test (OGTT) uses: a measured 75 g glucose drink, blood drawn at two hours. A home meter reading two hours after a normal meal is a rough cousin — useful for trends, but only the standardised test counts for diagnosis.
The two-hour number catches a different problem than the fasting number: it is the first thing to move when glucose clearance slows, which is why some people have a normal fasting value and a diabetic two-hour value at the same time.
Quand voir un clinicien
- Two-hour values at or above 11.1 mmol/L — book a formal test.
- Repeatedly 7.8-11.0 after normal meals — the earlier it is caught, the more reversible it is.
Référence seulement, pas un diagnostic. Les seuils de cette page sont des valeurs OMS et ADA au niveau population ; votre clinicien interprète vos propres chiffres contre votre histoire, vos médicaments et d’autres tests. Si une valeur vient avec des symptômes, ou continue de bouger dans le mauvais sens, c’est le signal d’agir — pas cette page.