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发表于 2018-7-24 16:32:25
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各位大咖你们好,有一注射剂,规格是150mg,单剂量,用150mL的0.9%氯化钠配制成1mg/mL于20-30min内静脉滴注,其内毒素限值应该是多少? 是1.5EU,还是2EU?
The endotoxin limit for parenteral drugs, defined on the basis of dose, equals K/M
where K is a threshold pyrogenic dose of endotoxin per kg of body weight, and M is equal to the maximum recommended bolus dose of product per kg of body weight. When the product is to be injected at frequent intervals or infused continuously, M is the maximum total dose administered in a single hour period. The endotoxin limit for parenteral drugs is specified in the individual monograph in units such as EU/mL, EU/mg, EU/Unit of biological activity, etc.
Fortunately, the human body can tolerate small amounts of bacterial endotoxins. Specifically, if administered intaveneously, the level is 5 EU/kg-hr; and if administered intrathecally, the level is 0.2 EUI/kg-hr.
Thus L = K/M = 5EU/(kg*h) / [150mg/(60kg*h)] = 2 EU/mg
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