LER and Hold-Time Studies
Maximize the success of your BLA and MAA submissions with CellMade’s specialized Low Endotoxin Recovery (LER) and Hold-Time Studies. Our protocols, aligned with PDA Technical Report 82, identify matrix-induced masking and validate sample stability from collection to analysis, providing the defensible scientific evidence required for FDA/EMA regulatory approval.
CellMade provides specialized technical mastery for Low Endotoxin Recovery (LER) and QC Sample Hold-Time Studies, addressing the critical "masking" phenomena required for BLA and MAA submissions. Conducted in accordance with PDA Technical Report 82, our LER studies utilize chronological and reverse-spike methods to identify matrix-induced endotoxin loss—a time- and temperature-dependent suppression common in products containing chelating agents or non-ionic surfactants. Beyond investigating masking, we execute QC Sample Hold-Time Studies to validate the stability of endotoxin and pyrogens from the moment of collection to laboratory analysis, ensuring your storage conditions and SOPs remain GMP-compliant. These rigorous protocols deliver the scientific evidence necessary to defend your control strategy during FDA/EMA inspections, transforming complex analytical hurdles into defensible regulatory assets.
