2. The anatomic or functional manifestations of a disease: the pathology of cancer. 3. A departure or deviation from a normal condition: Neighborhoods plagued by a self-perpetuating pathology of joblessness, welfare dependency, crime (Time).
1 A fasting blood sugar level from 100 to 125 mg/dL (5.6 to 6.9 mmol/L) is considered prediabetes. If it's 126 mg/dL (7 mmol/L) or higher on two separate tests, you have diabetes.  Oral glucose tolerance test. For this test, you fast overnight, and the fasting blood sugar level is measured.
For a non-diabetic, blood sugar levels should be between 70-120, depending on what you've eaten or drank. It is normal for blood sugar to go up a bit after a meal, but not over 120 or so. A normally functioning pancreas will secrete the insulin needed to compensate for whatever you have eaten, keepng the blood sugar within a normal range.