Lab Testing
Independent verification. Every batch.
We don't sell what we can't prove. Every SPT batch is analyzed by an independent laboratory before it ships.
HPLC
Reverse-phase analysis
MS
Mass spectrometry ID
99%+
Minimum purity
CoA
Per batch certificate
The SPT testing protocol
01
Synthesis
Solid-phase peptide synthesis (SPPS) performed in controlled environments using research-grade reagents.
02
Purification
Reverse-phase HPLC purification to remove deletion sequences, truncations and byproducts.
03
Lyophilisation
Freeze-drying to produce stable lyophilized powder for long-term storage and shipping.
04
Independent Analysis
Third-party HPLC and mass spectrometry confirms identity, purity (≥99%) and concentration.
05
Certificate of Analysis
A signed CoA is generated per batch — published on the corresponding product page.
06
UK Dispatch
Vials are inspected, sealed in premium packaging and dispatched from the UK.