For a contract research team, a CoA request is a traceability exercise, not a courtesy email. Product names help a buyer find a catalogue page, but they are a weak key when several deliveries, restocks and shared Internal Test References sit behind a study. The strongest identifier is usually the vial reference printed on the label. Quoting that reference to the supplier gives the documentation team a precise route to the batch-linked CoA and reduces the risk of matching the wrong certificate to the wrong material. This guide sets out a practical, audit-minded workflow for UK laboratories. All materials discussed are research-use-only; they are not for human or veterinary use and are not medicines, medical devices, injectables, treatments or food supplements.
Why the Vial Reference Is the Strongest Key for a CoA Request
A product title such as BPC-157 10mg or TB-500 5mg tells you what listing to open. It does not tell you which vial is in front of you. Research Sciences labels combine a SKU code and expiry date, for example BPC10-03/27, and the site states that this reference links to the corresponding CoA. For a contract team, that is the difference between a general product query and a batch-specific documentation request. The supplier can search the exact reference instead of guessing from a name that may appear across several pages, deliveries or stock cycles.
The practical request should be short and exact: ask for the CoA linked to the vial reference, quote the reference character for character, and include the product listing name as supporting context. If the team is holding several vials, provide a list of references rather than a quantity. Do not rely on cap colour. The FAQs state that vial cap colours and other packaging may vary and that cap colour is not an indicator of identity, analytical quality or manufacturing origin. A contract lab should record the label text at goods-in and keep it with the study file.
The Internal Test Reference needs careful handling. Restocked products may carry the same ITR as earlier stock. The FAQs explain that an ITR links to associated sample testing reports; it does not confirm that separate deliveries come from the same production lot or have had separate independent testing. This is why a new delivery should not automatically inherit an old CoA. Quote the new vial reference, ask whether the ITR is shared, and ask for the document set that accompanies that delivery. This is also why the vial reference is more useful than a product name in correspondence. It anchors the request to a physical vial and a documented label, not to a catalogue page that may have been updated.
What to Ask For When You Need an Audit-Ready Documentation Pack
A contract research team usually needs more than a single PDF. It needs a defensible link between the material received, the certificate supplied and the study record. The FAQs describe a CoA for every product, with HPLC data for purity and identity, independent HPLC testing, and final verification and quality checks in the UK before release. The About page also describes a testing framework that includes heavy metals and endotoxin screening alongside CoA documentation. These are the supplier’s published descriptions, so the batch CoA remains the document to open and check. The homepage lists “CoAs Janoshik Analytical Reports”; that line is not a substitute for reading the certificate that accompanies the specific vial.
The request should therefore ask for the CoA tied to the quoted vial reference and, where an ITR appears, for the associated sample testing reports described by the supplier. Ask for the current storage and handling wording that applies to the product listing, because a contract team should file the version it actually received. For UK teams assembling a documentation pack, the public catalogue at Peptide uk is useful for checking current product wording, but the batch-specific CoA and storage guidance should be reconfirmed against the vial reference and the live page. Do not assume that a headline purity line replaces batch documentation.
It is also sensible to separate product suitability from documentation. The purchaser is responsible for lawful use, safe handling, storage and disposal, and for compliance with relevant UK regulations including COSHH and laboratory safety standards. Research-use-only materials are not for human or veterinary use, and the supplier’s stated position is that products are not supplied for therapeutic, clinical or diagnostic purposes. For an in-vitro workflow, the documentation pack should support the study’s own risk assessment and material acceptance record. A contract team should keep the vial reference, the CoA, the associated testing report reference where applicable, and the correspondence trail together. If a document is unclear, pause and ask the supplier to confirm the link rather than filing a certificate that names only the product.
A Practical Request Workflow: From Vial Label to Verified CoA
Capture the reference at goods-in
At receipt, record the full label reference for each vial, the product listing name, the delivery month and the condition of the packaging. Do not paraphrase the reference or shorten it to the SKU alone. Keep the original label visible in the goods-in record and store lyophilised materials at −20°C or below, sealed with desiccant and protected from moisture, heat and light. Reconstituted materials are less stable and should be stored at 2–8°C for short-term laboratory use. These are in-vitro handling notes only; materials are not for human or veterinary use, and the shop’s reconstitution calculator and materials are not for medical or clinical use.
Send a batch-specific request
Email the supplier with the exact vial reference, the product name and the order or delivery context the team holds. Ask for the CoA linked to that reference and ask whether an ITR applies to the delivery. If multiple vials are in scope, list each reference. This reduces back-and-forth and gives the supplier a precise search term. Keep the reply with the study file. A contract team should not accept a certificate that has been matched only by product name when a vial reference is available.
Verify, file and manage restocks
When the CoA arrives, check that it relates to the quoted reference, the product identity and the analytical information the team needs for its acceptance record. File the document with the goods-in record and any associated testing report reference. For restocks, repeat the process. A shared ITR does not confirm that separate deliveries share a production lot or have had separate independent testing, and cap colour should not be used as a proxy for identity or quality. If the certificate and the vial label do not align, hold the material pending clarification. This final check is the point of quoting the vial reference in the first place: it keeps the contract research team’s documentation tied to the actual vial, not to an assumption.
