Source Check · Transparency
CoA Library
Every batch we dispatch from the UK ships with a Certificate of Analysis available on request — HPLC purity and mass-spectrometry identity, signed and dated by lot.
HPLC Purity
≥98%
Identity
Mass Spec
Per Batch
Signed CoA
How to request a CoA
- Note the product and lot number printed on your vial label.
- Email hello@professorpeptide.co.uk with the subject line "CoA request — [Product] [Lot]".
- We reply with the signed PDF within one working day (usually same day).
Featured compounds with batch CoA on request
Semaglutide
GLP-1 / Metabolic
Synthetic GLP-1 analogue for biochemical receptor research.
Tirzepatide
GLP-1 / Metabolic
Dual GIP and GLP-1 receptor agonist for incretin research.
Retatrutide
GLP-1 / Metabolic
Triple-agonist incretin investigated in metabolic research.
BPC-157
Healing & Repair
Pentadecapeptide derived from a protective protein in gastric juice.
TB-500 (Thymosin β4 Acetate)
Healing & Repair
Synthetic analogue of the naturally occurring Thymosin Beta-4.
Ipamorelin
Growth Factors
Selective ghrelin receptor agonist for endocrinology research.
CJC-1295 No DAC 5 mg + Ipamorelin 5 mg
Blends
Classic GH research blend.