Research Insights
Peptide science, analytical methods, and lab techniques from the Peptech team.
What Is TB-500? A Research Peptide Overview
A research overview of TB-500, a synthetic peptide related to thymosin β4 studied in actin-regulation and cell-migration models.
Glutathione Peptide: What It Is and Research Applications
Glutathione is a tripeptide studied in antioxidant and cellular research.
What Is Tesamorelin? A Research Peptide Overview
A research overview of tesamorelin, a stabilized growth-hormone-releasing-hormone (GHRH) analog studied in endocrine-signaling research.
Tirzepatide Peptide: A Research Overview
A research overview of tirzepatide, the dual GIP/GLP-1 receptor agonist peptide studied in metabolic-signaling research.
What Is NAD? A Research Overview
NAD (nicotinamide adenine dinucleotide) is a critical coenzyme studied in aging and metabolic research.
What Is PT-141? A Research Peptide Overview
A research overview of PT-141 (bremelanotide), a melanocortin-receptor agonist peptide studied in neuroscience and receptor-pharmacology research.
What Is Semax? A Research Peptide Overview
A research overview of Semax, a synthetic ACTH(4-10)-derived peptide studied in neuroscience and neuroprotection research — including how it compares to selank.
US Research-Peptide Suppliers: What Researchers Check (2026)
Criteria researchers commonly use when evaluating US peptide suppliers — third-party COAs, lot traceability, and transparency — plus examples of referenced names.
HPLC vs Mass Spec: what each one actually measures
Purity and identity are different questions. A real QC program answers both.
Lab Standards
Research fundamentalsHow to read a Certificate of Analysis
Identity, purity, net content, endotoxin — what each line on a COA actually tells you, and where labs differ.
Why cold chain matters for lyophilized peptides
Lyophilized cakes are supplied in a stable dry state. Cold-chain transit and lot-specific COA data support research-material integrity.
Third-party testing, explained
Why we test every batch at an independent ISO 17025 lab before release — and what we do when a result doesn't pass.
Lot traceability from synthesis to bench
How the QR code on every vial maps back to a single manufactured lot and its full analytical record.