Final answer:
Pharmacies are required to maintain an inventory and record-keeping system for compounded products, controlling for long-term storage and short-term stability, to ensure product safety and integrity.
Step-by-step explanation:
A pharmacy must maintain an inventory and record-keeping system for all compounded sterile and non-sterile products. This includes ensuring the long-term storage stability of the products and understanding their short-term stability at room temperature or at the sample processing temperature.
Additionally, a pharmacy is responsible for monitoring post-preparative stability at room temperature or under the storage conditions that will be used during the study, whether it be as a dry extract or in the injection phase.
This ensures that the mean concentration of the products remain within ± 15% of the nominal value even after undergoing freeze-thaw cycles, which is critical for maintaining product integrity and safety.