Certificate of Analysis
Your vial, your certificate.
Every Peptide Labs vial label carries a lot number. Enter it below to see the independent laboratory results for that exact production lot — the same certificate that ships in the box.
What you will see
What a lot-matched certificate contains
The online summary reproduces the release values from the independent laboratory's report. The full PDF — chromatogram, spectrum and analyst sign-off — is linked wherever it has been published.
Product & lot identification
Compound, size and the lot number assigned at synthesis — the same number printed on the vial label.
RP-HPLC purity
Main-peak area percent at 214 nm on a reversed-phase C18 gradient. Our release limit is ≥99.0%.
ESI-MS identity
Observed mass deconvoluted from the charge-state envelope and compared against the theoretical mass of the sequence.
Endotoxin & net content
Kinetic chromogenic LAL per USP <85> and a quantitative assay of peptide content against label claim.
Testing laboratory & accreditation
The independent US laboratory that generated the values, with its accreditation on record.
Where to find it
The lot number is printed on the wrap label of every vial and on the paper certificate packed with your order. Older lots not yet published online can be requested from support@peptidelabs.supply.
Recently released
Latest published lots
The most recent certificates added to the public register. Each opens the summary for that lot.
Register
Certificates are published as lots are released. Your paper COA ships in the box with every order in the meantime.
For in-vitro laboratory research use only. Not for human or veterinary use, or for diagnostic or therapeutic purposes. Certificates document analytical results for laboratory reference and make no claim of effect in humans or animals.