It is hard to answer without knowing the context of your question. Is this a fasting blood sugar on someone with diabetes? On a pregnant woman? Is this after treatment of hypoglycemia or hyperglycemia?
As Meriwhen pointed out, normal values fluctuate and it's often better to look at lab values as a trend rather than as singular values. Just as we can't assume that the person with a singular blood pressure reading of 150/90 is hypertensive, we cannot make assumptions on one blood glucose result that is slightly above normal for most people.
Additionally, we cannot rule out user error as a cause for an abnormal blood sugar value. If you're using a reagent strip (like an Accuchek) you will have different readings if you don't get enough blood on the strip, if you don't get the blood on quickly enough, if the strip is contaminated by body oils or water or even if the finger of the person being tested is not clean and there are traces of sugar on his/her finger.
If you can give us a bit more information, I think we might be able to help you answer this question. However, if this is a question for your own health concerns, we will need to close the thread because we are prohibited from giving medical advice here on this forum.