Traceable reference material that survives a sponsor audit.

Ask sales for the COA matched to the offered or supplied lot. It records the tests actually completed, their specifications, and results. Tell us the sponsor's required methods and document set before quotation so capability, timing, and any additional cost can be agreed.

Multi-site shipments carry a harmonized per-lot packet so every site references identical documentation for the same study. This avoids the cross-site mismatches that turn into audit findings.

Impurity profiling and quantitative amino-acid analysis are available on request alongside the standard identity/purity packet — useful when a method or a sponsor requires content assignment beyond HPLC area-percent. Our lab notes on impurity profiling and AAA describe what each adds.

Yes — forecast-based reservation holds against an expected window so a sponsor-driven schedule change does not reset your lead time. Discuss the campaign forecast at quote stage.