Beyond-Use Dating and Stability Flashcards
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Read the first 7 Beyond-Use Dating and Stability flashcards as text
Which analytical method is considered the gold standard for assessing drug concentration and confirming potency during stability testing of compounded preparations?
Answer: High-performance liquid chromatography (HPLC)
HPLC is the gold standard analytical method for quantifying drug concentration and confirming potency in stability studies due to its sensitivity and specificity.
According to USP (2023), what is the maximum BUD for a Category 2 CSP stored at controlled room temperature WITHOUT extended stability studies?
Answer: 4 days
Category 2 CSPs without extended stability studies may be assigned a BUD of up to 4 days at controlled room temperature per the 2023 revision of USP .
What does the term 'potency' refer to in the context of beyond-use dating for compounded preparations?
Answer: The amount of active drug per unit that produces a given pharmacological effect
Potency refers to the concentration of active ingredient per unit dose that produces the intended pharmacological effect; it must remain within acceptable limits throughout the BUD period.
Which organization provides the primary national standards for beyond-use dating in both sterile and non-sterile compounded preparations in the United States?
Answer: United States Pharmacopeia (USP)
USP chapters (non-sterile) and (sterile) provide the primary national standards for BUD assignment and are widely adopted by state boards and accrediting bodies.
A pharmacist compounds a water-containing oral suspension from bulk chemicals. Under USP Category 1 guidelines, what is the maximum BUD?
Answer: 35 days under refrigeration
Water-containing oral formulations compounded from bulk chemicals under USP Category 1 have a maximum BUD of 35 days when stored under refrigeration.
Which of the following best describes 'accelerated stability testing' for compounded preparations?
Answer: Testing performed by exposing preparations to extreme conditions (e.g., elevated temperature/humidity) to predict long-term stability
Accelerated stability testing uses elevated temperature and humidity to simulate the effects of long-term storage in a shorter time, allowing faster prediction of appropriate BUDs.
When peer-reviewed literature documents stability data for a specific compounded formulation, how should this data influence BUD assignment?
Answer: The BUD may be extended based on valid stability data, provided compounding conditions match those studied
Valid peer-reviewed stability data can support BUDs beyond USP defaults, but the compounding conditions, formulation, and storage must match those described in the published study.