Research Article

Tips and Tricks for Validation of Quality Control Analytical Methods in Good Manufacturing Practice Mesenchymal Stromal Cell Production

Table 3

Preliminary endotoxin test on the interfering factors on the final product at different dilutions.

ParametersProduct dilutionNegative control (LRW)Acceptance criteria
1_301_901_180

Onset time sample no spike>1039>1039>1039>1039>1039
CV between sample replicates (%)0000<10%
CV between spike replicates (%)1.35.62.30<10%
Spike recovery (%)115122114np50%–200%
Sample value (EU/mL)<0.15<0.45<0.9np<EL