Tested by Janoshik Analytical
How we test every lot
What the lab measures on a JP batch, what each number means, and how to read it on a certificate.
Three tests, one independent lab.
Sealed vials from each lot go to Janoshik Analytical. These are the tests it runs for us and the lines a lot has to meet.
HPLC purity
Separates the sample into its parts and measures what share of the signal belongs to the target peptide. The release line is 98.0 %; every certificate prints the exact figure the lab reported.
Method: RP-HPLC · UV 214 nm
Release line: ≥ 98.0 % of peak area
On the certificate: Headline figure and the first QC row
Net peptide content
Measures how many milligrams of peptide are actually in the vial and sets that against the label. A lot is released only when the measured mass is at least 90 % of the label claim.
Method: Quantitative HPLC
Release line: ≥ 90 % of the label claim
On the certificate: Net content box and a QC row, in mg per vial
Bacterial endotoxins
Screens for endotoxin from bacterial cell walls, reported in EU per vial against a research limit of 10 EU. It is a separate report, so it appears only on lots where the lab ran it.
Method: LAL · kinetic
Research limit: ≤ 10 EU per vial
On the certificate: A QC row, only on lots the lab screened
How to read a certificate
Match the lot
The lot and sample code at the top of the certificate should match the LOT printed on your vial label.
Check the status
Released means the lot met both release lines. In review means it fell short of one, and that QC row is marked Review.
Read the headline figure
The large number is HPLC purity as the lab reported it. A blend shows its component count, and a report without a purity figure shows net content instead.
Go row by row
Each QC row gives the test, its method, the specification and the result, with a Pass, Review or Reported marker.
Compare content with the label
Measured milligrams sit next to the label claim. Blends list every component separately.
Note the dates
The analysis date is the day the lab tested the lot. The expiry printed on the certificate is two years from that date.
Only tests present in the lab’s report are shown. If the lab did not run a test on a lot, that row is left off its certificate rather than filled in. The full lab report for any batch is available on request.
