TABLE II

Results of the Product-specific Method Validations Using rFC Reagent for the Detection of Bacterial Endotoxins in Various Pharmaceutical Products

Sample TypeCompendia Inhibition/EnhancementCompendia pHAccuracyPrecision
%PPC Lot 1%PPC Lot 2%PPC Lot 3pH1High (average)Low (average)High (average)Low (average)
Insulin Solution90%98%101%Pass92%89%6%9%
Insulin Solution100%99%95%Pass90%88%9%10%
Insulin Solution93%90%90%Pass87%90%11%19%
MAb DS99%95%98%Pass107%98%4%10%
MAb DP104%96%102%Pass102%102%12%13%
MAb DS93%96%94%Pass90%77%4%5%
MAb DP80%93%90%Pass86%80%4%6%
MAb DS90%93%94%Pass86%85%13%13%
MAb DP98%112%105%Pass106%101%7%9%
MAb DP106%107%106%Pass101%95%6%8%
MAb DS101%100%98%Pass104%81%5%20%
MAb DP103%107%117%Pass105%101%6%9%
MAb DP102%93%105%Pass89%87%10%10%
MAb DS94%91%97%Pass98%84%5%19%
MAb DP95%102%99%Pass88%80%12%19%
MAb DS109%112%111%Pass107%96%7%3%
Excipient114%117%119%Pass111%93%4%3%
Excipient90%95%91%Pass94%90%8%6%
Water: rFC Supplier 1293%114%112%Pass100%116%4%12%
Water: rFC Supplier 2288%89%90%Pass117%112%7%9%
Water: rFC Supplier 1387%98%102%Pass99%83%10%6%
Averages98%92%9%11%
  • 1 pH criteria is 6–8 units in the neat sample, the test dilution or the test dilution combined 1:1 with rFC reagent.

  • 2 0.05 EU/mL assay sensitivity.

  • 3 0.01 EU/mL assay sensitivity.

  • DS, drug substance; DP, drug product; %PPC, product positive control recovery (%).