Blueberries

Does anyone know the carb value for blueberries? They don't appear in my carb/GI books.

Supermarket labels show anything from 7 to 15 carbs per 100g weight. I don't believe the suppliers have tested the specific variety, to account for the different figures, since values on packs of strawberries are consistent.

Thanks

Thanks. I tend to have them with breakfast, when my insulin/carb ratio is most variable, so it wasn't clear which needed tweaking.