Which term indicates a dosage should be given every week?

The term that indicates a dosage should be given every week is represented by "QW," which stands for "quaque week" in Latin. This abbreviation is commonly used in medical terminology to specify a dosing frequency of once per week. It provides clear and concise instructions for healthcare providers on the schedule for medication administration, emphasizing the importance of adhering to the specified interval for optimal therapeutic effects.

In comparison, "Q.D." stands for "quaque die," which means "once daily," indicating a different dosing frequency. "PRN" is an abbreviation for "pro re nata," which means "as needed" and does not specify a regular dosing schedule. "HS" stands for "hora somni," which translates to "at bedtime," indicating another specified timing rather than a frequency. Understanding these terms is crucial for correctly interpreting medication orders and ensuring proper patient care.