Final answer:
The question addresses medication labeling standards in healthcare institutions, suggesting all except a specified exception should follow written policies and procedures, aligned with regulatory guidelines for patient safety.
Step-by-step explanation:
The question pertains to the standards for labeling of medications within a healthcare institution. While the question leaves a blank for the exception to the rule, it generally implies that all medications should be labeled according to the institution's written policies and procedures. Certain medications or situations, such as emergency use drugs or investigational drugs, might have different labeling requirements. Healthcare facilities often follow guidelines set by regulatory organizations such as the U.S. Food and Drug Administration (FDA) and The Joint Commission to ensure patient safety and drug efficacy.