Price source
A listed amount, product configuration, direct source URL and check date.
Market methodology · version 1.0
Four facts.Never one vague score.
Price, discount, documentation and independent verification answer different questions. PeptideStat keeps them separate so a promotional relationship cannot turn into an implied quality rating.
Code state
Active, pending or absent. The after-code number is always labeled as an estimate.
Document state
Batch-linked, product-page, library-only or vendor claim.
Verification
Vendor-hosted documentation is never presented as PeptideStat product testing.
COA vocabulary
What each badge actually says.
COA presence is a documentation observation. It is not a blanket claim about purity, sterility, identity, efficacy or the contents of a future order.
Batch report linked
Means
PeptideStat recorded a vendor-hosted report or batch entry whose product name and strength match the listing.
Does not mean
PeptideStat bought or sampled the material, established chain of custody, or repeated the laboratory test.
Product-page COA
Means
The product page contains a COA area or analytical document, but no batch record has been entered in the PeptideStat ledger.
Does not mean
The report necessarily matches inventory currently shipping.
COA library only
Means
The vendor publishes a certificate library or archive that may contain relevant reports.
Does not mean
A report has been matched to this exact product, strength or lot.
Vendor testing claim
Means
The vendor states that products or batches are tested.
Does not mean
PeptideStat found a public report for the listing.
Price calculation
Same stated unit.
Price per milligram equals the code-adjusted estimate divided by the vendor’s stated milligrams. Rankings stay within one served market and currency. Shipping, tax, insurance, bulk tiers and payment-method fees are excluded unless explicitly recorded.
Freshness
Stale should look stale.
Every listing carries a check date and price-source state. Entries without a direct product link are marked for recheck instead of being presented with false precision.
Commercial relationships
Disclosure at the click.
Active partner links are marked sponsored. Pending applications do not receive affiliate treatment. Partner status never changes sorting or documentation labels.
See the model in use