Introduction
Peptide purity has become a defining factor for reproducibility in labs worldwide. Researchers demand the highest standards to avoid inconsistent data.

Trends

• Global discussions on reproducibility are driving higher purity requirements.

• Labs increasingly request COAs before starting studies.

• Impurities have been linked to variations in signaling results.

Polygon Peptides Commitment
We supply semaglutide, tirzepatide, and retatrutide at ≥99% purity, confirmed via HPLC testing, with COAs readily available.