There is no hard and fast rule. The gluten free state of the wine is dependent on which country the wine is form and the type of wine making process they use.
There can be some cross contamination with wines if they are sealed into the barrels with a flour/water paste(common with European Union barrel manufacturers).
The other thing to watch out for if you are an allergic person is sulfites in wine - as these can also cause allergies
"What is Bio Revive GlutenTest?" It is an at home finger
prick test for gluten intolerance that takes only 5 minutes to give
results. It is associated with IgA Auto-Antibodies from a fingertip
blood sample. It is easy to read as it will give either a positive or a
negative result.
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The
information presented on this site is of the general nature and not
meant to replace that of a professional. Always check labels and ask if
food, products and medication are gluten free. Due to the nature of
businesses, restaurants and cafes changing ownership and staff we can
not guarantee the gluten free status of any products or locations on
this site.