Which blood glucose level indicates an abnormal value for a nonfasting patient?

A blood glucose level of 148 mg/dL indicates an abnormal value for a nonfasting patient because it exceeds the typical range for nonfasting blood glucose levels, which is usually considered to be between 70 mg/dL and 140 mg/dL. After eating, blood glucose levels may rise, but they typically should not go above 140 mg/dL in a nonfasting individual. Values above this threshold can be indicative of impaired glucose tolerance or diabetes mellitus, necessitating further evaluation and management.

In contrast, levels such as 98 mg/dL, 108 mg/dL, and 128 mg/dL fall within the normal or acceptable range for nonfasting individuals and do not raise any immediate concerns regarding glucose metabolism or diabetes. Hence, they are considered normal in a nonfasting context.