An analytical verification workflow for reference peptides
A conservative receive-and-verify workflow for reference standards: documentation checks, identity and purity confirmation, and re-verification windows.
A reference standard is only as good as the checks performed when it arrives. This is a conservative, documentation-first workflow for receiving and verifying a research peptide.
Receiving a reference standard
On arrival, reconcile the vial against its paperwork: confirm the compound, the lot code, and that a Certificate of Analysis is available for that lot (see batch traceability). For temperature-sensitive material, validate the temperature log before anything else — see cold-chain handling.
Verification steps
Where in-house instrumentation allows, confirm the three independent measures:
- Identity by mass spectrometry
- Purity by HPLC against the lot value
- Salt content by counter-ion analysis
Record your own readings alongside the COA so any future drift has a baseline.
Re-verification windows
Lyophilised material is stable for long periods when stored correctly (see lyophilised peptide stability). Once reconstituted, set a re-verification window and re-check purity by HPLC before a working stock approaches the end of it — the principles are covered in peptide stability and freeze-thaw degradation.
Research use only. All products and content are intended strictly for in-vitro laboratory research and analytical use. Not for human or veterinary use, not for consumption, and not for any diagnostic or therapeutic purpose.