How every lot gets its report
Four steps, identical for every SKU we sell. No exceptions for popular items, no averaging across production runs.
01
Sample pulled
A random vial from each production lot is pulled before listing.
02
Independent lab
Sent to a third-party lab we don't own or invest in — HPLC + mass spec.
03
Report published
Full report attached to the lot number, publicly viewable, no login.
04
You verify
Scan the vial or enter the lot code — same report, any time.
Why per-lot and not per-product
A certificate that covers “the product” covers nothing in particular. Synthesis varies between production runs, so a report only means something when it names the lot it came from. That is why every listing here shows a lot code, and why retired lots keep their report published rather than disappearing with the stock.
Methods used
- HPLC (area %)
- Separates the peptide from synthesis by-products and reports purity as a percentage of total peak area.
- Mass spectrometry
- Confirms the molecule matches its reference sequence by measuring molecular mass.
- Gravimetric assay
- Verifies the net peptide content actually present in the vial against the declared fill.
- Sterility panel
- Screens the lot for microbial growth before it is released for sale.
Lab Testing
Catalog27
Lot103
Testing labIndependent, contracted