Certificate of Analysis (COA)
Compound identity, lot reference, purity/assay fields and QC sign-off fields for the production lot for the selected current batch.
In-house production & QC · quality policy & self-service COA library
Batch-linked COAs with clearly labeled analytical results.
Published lots are available as one-click PDFs in the self-service COA library, with batch-linked chromatographic purity and molecular-weight identity results. The public library is expanding by product and specification; Pepti does not present unpublished or historical files as current public COAs. Independent local verification is welcome, and confirmed quality issues are eligible for replacement or refund under this quality policy.
Direct answer
How Pepti wants buyers to verify quality claims.
Start with the public COA library, then match product, specification and lot reference against the quoted order. The library currently lists 76 public COA entries and the Company Fact Sheet explains what Pepti provides and does not provide. HPLC purity, MS identity and COA wording should be read as batch-document evidence, not as medical-use, sterility, endotoxin or suitability claims.
| Check first | Product name, strength, lot reference, chromatographic purity result and molecular-weight identity result. |
|---|---|
| Check next | RFQ scope, destination compliance, packaging requirements and independent local verification needs. |
| Do not assume | Do not treat a COA as proof of fill quantity, sterility, endotoxin or suitability for any use. |
Batch document pack · one-click COA PDFs
How Pepti handles batch documents.
Each published Current Batch COA is a direct PDF in the self-service library. Pick the product and specification, then open any listed PDF. Generic or historical COAs are not presented as current-lot documents. If your product or strength is not yet listed, check the public library search first; coverage is expanded as records are prepared for publication.
Chromatographic purity result
The purity result reported inside the applicable batch COA, shown as an actual value only where confidently verified.
Molecular-weight identity result
The observed molecular-weight or component identity result reported inside the applicable batch COA.
Representative analytical previews
Historical HPLC and LC-MS testing examples.
These protected previews show representative historical analytical results from previously tested Retatrutide samples, including HPLC-UV purity, LC-MS identity confirmation and measured net content. They demonstrate the analytical format and testing capability; they are not current-batch COAs and do not represent every production lot.
Why the public preview is protected
Full-resolution analytical files and report identifiers from historical previews are not published as reusable downloads. Published current-batch PDFs should be opened from the COA library. A historical preview is reference material only; buyers who require additional confidence may independently test a received trial-order sample or discuss a buyer-designated laboratory for qualified bulk procurement.
Per-batch document pack
What is confirmed during RFQ review.
Pepti uses a lot-linked COA workflow. During RFQ review, the applicable COA, selected compound, specification and lot reference are aligned before order confirmation.
| Evidence | What buyers see · Purpose |
|---|---|
| Certificate of Analysis (COA) | Current batch certificate with compound identity, purity/assay fields, lot code and document date for the production lot. Baseline procurement file for B2B research buyer, research organization, regulated B2B buyer and OEM buyers. |
| Chromatographic purity | Actual chromatographic purity result reported within the applicable COA. Purity review before purchase and reorder. |
| Molecular-weight identity | Observed molecular-weight or component identity result reported within the applicable COA. Identity review for research and OEM procurement. |
| Water content | Lyophilized vials report water content (typical ≤4%) on the COA. Stability and storage planning. |
| Lot traceability | Lot reference connected to order file, packaging and batch-linked documents. Reorders cite prior lot for continuity. |
| Packaging proof | Vial label, carton text, insert and lot-code placement reflected before production. OEM and repeat-procurement confidence. |
From inquiry to lot file
Four steps. No vague claims.
Synthesis partner review
Compound class, partner file, format and batch-level traceability checked before quoting.
Current batch check
For products with a published record, the batch-linked COA is opened from /coa/ and checked against the selected compound and lot reference before invoice.
Analytical run
Chromatographic purity, molecular-weight identity and water-content results are reviewed in the lot COA. Separate analytical files are described only when they actually exist.
Document & ship
Batch document references, packaging proof and lot sheet compiled, then the shipment route is confirmed.
≤ 4hAvg reply during business hours
≥ 99%HPLC purity target; actual lot result shown in documents
3–7 dTypical sample shipping after spec/payment confirmation
10–18 dStandard production-lot lead time after spec/artwork/payment confirmation
Production & QC
GMP peptide production, cleanroom fill and analytical QC.
Lyophilized peptides are produced under GMP conditions — controlled synthesis, cleanroom fill and HPLC/MS analysis for the production lot before release.
Buyer-controlled verification
Two practical ways to verify before scaling.
Independent local verification is welcome. independent third-party testing is available for buyers who want an extra verification layer. For a small first order, buyers can independently test a received sample at a laboratory they trust — sample lot from MOQ 1 kit (10 vials) with no forced bulk lets you test a real lot before scaling. For a qualified bulk RFQ, a buyer-designated laboratory, intended-lot sample and analytical panel can be coordinated privately before scaling. Confirmed quality issues are eligible for replacement or refund under this quality policy.
Trial order + local test
Receive the actual product, open the batch-linked COA PDF and its reported chromatographic purity and molecular-weight identity results, select the sample and send it to an independent laboratory before moving to a larger order.
Qualified bulk verification
Align the selected laboratory, test panel, intended lot and commercial order plan before testing begins.
FAQ
Questions buyers ask before placing a quote.
Where do I open the Current Batch COA?
Open the /coa/ library, filter by product and specification, and open any listed PDF directly. Each published PDF is the batch-linked Certificate of Analysis with the reported chromatographic purity result and molecular-weight identity result. Generic or historical COAs are not presented as current-lot documents.
What if the product or strength I need is not in the library yet?
The public /coa/ library is expanding by product and specification. If the specification you need is not listed, use the catalog and quote flow while checking the public library first; Pepti does not present unpublished or historical files as current public PDFs.
What is your HPLC purity target?
Target purity is confirmed by product and RFQ; the actual result must be checked against the applicable lot document. The COA summarizes batch results, including chromatographic purity and molecular-weight identity where reported. HPLC purity alone does not prove fill quantity, sterility, endotoxin or suitability for any use.
Do you provide third-party testing?
Independent local verification is welcome and independent third-party testing is available for qualified RFQs. Many buyers start with a sample lot from MOQ 1 kit (10 vials) with no forced bulk, open the batch COA PDF, use independent third-party peptide testing, then scale. Confirmed quality issues are eligible for replacement or refund under this quality policy.
How are lot codes structured?
Compound prefix + lot serial (e.g. BPC-10-2026Q2-A). The full lot-code structure is locked at packaging-proof step for repeat OEM supply.