# How to read a peptide COA Canonical: https://europeanpeptideshop.com/blog/how-to-read-peptide-coa/ Explore the catalogue and research library. Ordering and shipping have not opened yet. Documentation · 8 November 2026 · 3 min read · By [European Peptide Shop](https://europeanpeptideshop.com/about/) ### On this page A peptide certificate of analysis, usually shortened to COA, is useful when you can connect its results to the material in front of you. Start with the identifiers, then read the measurements. A percentage on its own leaves most of that work unfinished. For a European laboratory comparing suppliers, a consistent record is easier to review than a folder of screenshots. Keep the original document with the catalogue entry, receipt record and any questions still awaiting an answer. ## Start with the material Write down the full compound name, labelled amount and physical form before opening the report. Compare those fields with the sample description. Similar names can refer to different sequences, chemical forms or blends, so do not shorten a name simply to make two records match. For example, the [BPC-157 10 mg listing](https://europeanpeptideshop.com/shop/bpc-157-10mg/) is a catalogue description. A document about a different amount or a blend needs an explained connection before it can support that listing. The product page and the report perform different jobs. ## Make a report record Use a small worksheet with one row per document. The following fields help a colleague repeat the check without having to reconstruct your search. Field | What to record Material | Full name, form and labelled amount Lot | Identifier on the container and any supplier mapping Document | Issuer, report number and revision Dates | Sample receipt, analysis and document date when given Evidence | Original file location and date accessed Open question | The exact missing or conflicting field If the report is revised, retain both versions and note which one replaced the other. A changed filename alone is a poor revision history. Save correspondence beside the document rather than leaving the explanation in somebody's inbox. ## Separate the measurements Identity, purity and quantity answer different questions. ICH Q6B discusses these as distinct parts of analytical characterisation and specifications. It is a technical reference for products within its scope, not a certificate for research materials offered by this store. Read the result together with its method and units. A quantity reported in milligrams is not interchangeable with a chromatographic percentage. Our [HPLC purity guide](https://europeanpeptideshop.com/blog/what-hplc-purity-means/) explains the distinction and gives a separate worksheet for interpreting the analytical result. ## Keep gaps visible Create a short list of questions before contacting the supplier. Ask about a named field: an absent lot identifier, an unexplained sample description, or a result without units. That produces a more useful answer than asking whether the product is simply good quality. Record an unanswered question as unresolved. Do not replace an empty field with a number from a different product page or assume that a test was performed because it is common elsewhere. Where issuer verification is available, save the verification result separately from the supplier's copy. ## Check the current listing The [EPS COA library](https://europeanpeptideshop.com/coa/) shows whether a report has been published for each listing. Original Janoshik reports selected for EPS are available with their original client name and any missing batch fields visible. A published source report does not confirm that EPS has received or released physical stock. Use the same worksheet again when a report becomes available. That leaves a clear record of what changed, which questions were answered and which requirements still need evidence. ## Laboratory research only Materials listed on this site are supplied for in-vitro laboratory research and are not for use in or on humans or animals. They are not medicines. This article summarises published work and gives no dosing, administration, treatment or in-vivo guidance. Findings from a study apply to the material and conditions of that study, and they say nothing about any product listed here. ## References - [EMA: ICH Q6B, specifications, analytical tests and acceptance criteria](https://www.ema.europa.eu/en/scientific-guidelines/ich-q6b-specifications-test-procedures-acceptance-criteria-biotechnological-biological-products) ## Related listings [10 mg](https://europeanpeptideshop.com/shop/bpc-157-10mg/) Tissue repair research ### [BPC-157](https://europeanpeptideshop.com/shop/bpc-157-10mg/) 10 mg · Lyophilised powder Ordering opens later. Prices and availability are not yet published.[Details](https://europeanpeptideshop.com/shop/bpc-157-10mg/) [50 mg](https://europeanpeptideshop.com/shop/ghk-cu-50mg/) Skin and cellular research ### [GHK-Cu](https://europeanpeptideshop.com/shop/ghk-cu-50mg/) 50 mg · Lyophilised powder Ordering opens later. Prices and availability are not yet published.[Details](https://europeanpeptideshop.com/shop/ghk-cu-50mg/) ## More articles Buying guides · 3 min read ## [Comparing research peptide prices](https://europeanpeptideshop.com/blog/research-peptide-prices-europe/) Compare research peptide prices, labelled amounts and documentation. See EPS format details and what to check before comparing final EUR quotes. 8 November 2026 Documentation · 3 min read ## [Peptide storage records](https://europeanpeptideshop.com/blog/peptide-storage-records/) Start with the exact material and its documentation. A useful storage record preserves what was known at receipt and what happened afterwards. 8 November 2026 Documentation · 3 min read ## [What HPLC purity means](https://europeanpeptideshop.com/blog/what-hplc-purity-means/) A chromatographic percentage and the amount in a vial are different measurements. Read the method before comparing the number. 8 November 2026