Final answer:
Records must be kept for a specific period of time in drug therapy management by a pharmacist under a physician's written protocol.
Step-by-step explanation:
In drug therapy management by a pharmacist under the written protocol of a physician, records must be kept for a specific period of time. The length of time that records must be kept can vary depending on various factors such as state laws and regulations, as well as the type of record being kept.
For example, in the United States, controlled substance prescription records must be kept for a minimum of two years. However, some states may require pharmacies to keep these records for longer periods of time, such as seven years.
It is important for pharmacists to familiarize themselves with the specific laws and regulations in their state regarding record-keeping to ensure compliance.