12 hour fast, glucose level- 110. about 95 in prior tests. problem? also does 1 glass of wine/day contribute to long term higher glucose levels?

No: There will always be a range for normal. If it keeps climbing when checked, that might indicate a problem. If you are not a diabetic, one glass of wine a day will not affect your glucose levels.

Prediabetes: A fasting glucose of 100-125 is considered prediabetes. Another test to check your average glucose over 3 months is a hemoglobin A1C. Considering you have an impaired fasting glucose, this would be a good test to see where your average blood sugar levels are. At this stage, you have the potential to reverse your condition with diet and exercise. You're likely ok with 1 glass of wine.