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Appl Environ Microbiol. 1985 July; 50(1): 91-93

Comparison of several control standard endotoxins to the National Reference Standard Endotoxin--an HIMA collaborative study.

F C Pearson, M E Weary, H E Sargent, T J Novitsky, H Lin, G Lindsay, R N Berzofsky, A L Lane, J D Wilson and J F Cooper

ABSTRACT

A collaborative study, initiated under the auspices of the Health Industry Manufacturers Association (HIMA), was designed to establish the relationship of Escherichia coli O55:B5 endotoxin (the control standard endotoxin of HIMA and the Food and Drug Administration's Office of Medical Devices) to the U.S. National Reference Standard Endotoxin and to two internationally used control standard endotoxins. By using two Limulus amoebocyte lysate test systems, it was established that the E. coli O55:B5 endotoxin lot originally used by HIMA and the Office of Medical Devices to establish Limulus amoebocyte lysate release test criteria for pyrogen testing of medical devices contains approximately 4.5 endotoxin units (EU) per ng. Thus, the 1.0-ng/kg endotoxin dose limit currently established for medical devices is approximately the same as the 5.0-EU/kg endotoxin limit (on an activity basis) established by several other Food and Drug Administration agencies for human and animal parenteral drugs and biological products.

Appl Environ Microbiol. 1985 July; 50(1): 91-93




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