Every batch of research peptide supplied by Oxford Research Peptides is subject to analytical testing before release. This page describes the analytical programme in plain language. It applies to material sold for qualified in-vitro laboratory research and does not constitute a therapeutic quality claim.
Analytical programme
- Identity — confirmed by mass spectrometry (MS) against the theoretical monoisotopic or average mass for the target sequence.
- Purity — assessed by reversed-phase high-performance liquid chromatography (RP-HPLC) with UV detection. Purity is reported as area percent at the specified wavelength.
- Appearance — visual inspection of the lyophilised solid.
- Net peptide content — reported where relevant to the compound and method.
Batch traceability
- Each batch is assigned a unique batch number.
- Analytical results are recorded against that batch number and released as a Certificate of Analysis (COA).
- The COA is retained and can be requested by qualified researchers who have purchased the batch.
Method summaries
The RP-HPLC and MS methods used for release testing follow standard reversed-phase and electrospray-ionisation practice for peptides in this molecular-weight range. Method summaries and reference literature are described in our Research Methodology and the analytical guides in the Research Hub.
Scope and limits of the analytical programme
- Testing is performed for research-use identity and purity confirmation. It is not a pharmaceutical release specification.
- The programme does not certify sterility, endotoxin content, or fitness for any therapeutic use.
- Materials are not for human or animal administration, diagnosis, or therapeutic use — see our Research Use Only notice.
Sample COA
A sample Certificate of Analysis is available on the Certificate of Analysis page and on our Lab Testing page.
Requesting a COA for your batch
Email oxfordresearchpeptides@gmail.com with your order number and the batch number printed on the vial label.
Reviewer
Analytical procedure pages are reviewed by our Analytical Chemistry Reviewer — see the Scientific Advisory Board.