Which prefix indicates a condition of being excessive or above?

The prefix "hyper-" denotes a condition of excessiveness or being above normal levels. It originates from Greek, where it means "over" or "excessive." In medical terminology, it is commonly used to describe conditions where there is an elevation in measurement or activity, such as "hypertension" for high blood pressure or "hyperglycemia" for high blood sugar levels.

In contrast, "hypo-" signifies a deficiency or low level of a substance, "eu-" refers to a normal or good condition, and "intra-" pertains to something that is within or inside, such as "intravenous." Therefore, "hyper-" is the only prefix that correctly indicates a condition of being excessive or above normal in medical contexts.