20.依據USP <797> Sterile Preparations之規範，low-risk compounded sterile preparations於冷藏條件下，beyond-use
date最長為多少天？
A.7
B.14
C.21
D.28
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答案:B
解析: 依據USP <797> Sterile Preparations之規範，不同類別compounded sterile preparations(CSP)於不同保存溫度的beyond-use date為：
| USP <797>
Sterile Preparations |
室溫
(room temperature) |
冷藏(refrigeration) | 冷凍
(frozen) |
| Low Risk | 48 hours or less | 14 days or less | 45 days or less |
| Medium Risk | 30 hours or less | 9 days or less | 45 days or less |
| High Risk | 24 hours or less | 3 days or less | 45 days or less |