HPLC purity
Find the reported purity result and the chromatogram. PeptidesDirect products carry a ≥98% purity standard; the report records the result for its identified lot.
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
LC-MS identity
Compare the observed molecular mass with the expected mass for the named peptide. This helps confirm that the analyzed material matches the stated compound.
Concentration
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?
Not by itself. HPLC describes chromatographic purity. LC-MS provides the molecular-mass evidence used to evaluate identity, so the two sections should be read together.
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.
