HPLC purity
Read the purity value where it was reported for the identified lot. The current analysis records do not include chromatograms; a purity summary alone does not establish peptide identity.
Peptide report literacy
How to read a CertikLabs peptide COA.
CertikLabs appears here only as the laboratory named on available PeptidesDirect analysis reports. Use this guide to match the physical product to its document and interpret the reported test fields.
First check
Match the vial, carton, and report.
01
Product name
Confirm the same information appears on all three references before relying on the results.
02
Strength
Confirm the same information appears on all three references before relying on the results.
03
Lot identifier
Confirm the same information appears on all three references before relying on the results.
Read the report
Endotoxin
Read the endotoxin result and any stated assay sensitivity or replicate information. A missing result means no endotoxin result is provided; it must not be interpreted as a pass.
Peptide content
Read the reported concentration or peptide-content result separately from HPLC purity. These measurements answer different questions and should not be treated as interchangeable.
Common questions
COA reading FAQ
What is a CertikLabs analysis report?
It is a laboratory document for an identified peptide lot. Where a CertikLabs report is available, the corresponding PeptidesDirect product page links it for review.
What should I match before reading the results?
Confirm that the product name, strength, and lot on the vial and carton match the identifiers on the report. A result should only be applied to the lot named on that document.
Does HPLC purity confirm peptide identity?
No. HPLC purity alone does not confirm peptide identity. The current analysis records do not include mass spectra or observed molecular-mass measurements, so they must not be treated as mass-spec identity verification.
Where can I find an available report?
Open the relevant product page and selected strength. If a lot report is available, the page provides access to it. Report availability varies by product and lot.
All products are strictly for in-vitro research use only.
