All Peptify UK research peptides are independently HPLC-tested to 99%+ purity. Download the Certificate of Analysis for any batch directly from this page.
All products are sold strictly for in-vitro research and laboratory use only. Not intended for human or animal administration.
From raw material receipt to batch release — how every Peptify product is verified.
Each incoming batch is logged with a unique identifier and quarantined pending testing. No batch is released for sale until testing is complete.
A sample from the batch is analysed by HPLC at an independent laboratory. The resulting chromatogram is reviewed for peak identity and the purity percentage is calculated.
Mass spectrometry confirms the molecular weight of the compound, verifying that the correct peptide was synthesised and ruling out substitution.
The independent laboratory issues a Certificate of Analysis recording the batch number, compound name, purity percentage, molecular weight, and date of testing.
Once the COA confirms 99%+ purity, the batch is released and the COA is made available for download. Each vial label carries the batch number for cross-referencing.
A Certificate of Analysis is a document issued by an independent testing laboratory confirming the purity, identity, and batch details of a specific research compound. Each COA links a physical vial to the test data for that production run.
A purity of 99%+ means that at least 99 parts in every 100 of the sample are the target compound, as determined by High-Performance Liquid Chromatography (HPLC). The remaining fraction may include trace amounts of solvents or synthesis by-products at levels below the detection threshold.
Each Peptify vial carries a batch number that corresponds to the downloadable COA for that production run. You can cross-reference the HPLC purity figure and molecular weight confirmation on the COA with the batch identifier printed on the vial label.
Yes. All Peptify peptides are sent to a third-party analytical laboratory for HPLC purity testing and mass spectrometry identity confirmation. Third-party testing ensures objectivity and provides traceability independent of the manufacturer.
High-Performance Liquid Chromatography (HPLC) is the industry-standard analytical technique for measuring peptide purity. A sample is injected into a pressurised column; each compound elutes at a different time, producing a chromatogram. The area of each peak is proportional to the quantity of that compound, allowing purity to be calculated as a percentage.
No. All Peptify peptides are sold strictly for in-vitro research and laboratory use. They are not intended for human or animal administration and are not approved as medicines by the MHRA.
Every batch has a downloadable COA on the product page. 99%+ HPLC purity, third-party verified, batch-traceable.
Browse Research PeptidesFor in-vitro research and laboratory use only.