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Peptides for Weight Loss: Research Compounds Compared

May 7, 2026

Peptides for Weight Loss: Research Compounds Compared

Side-by-side research comparison of the leading weight-loss peptides studied in Texas laboratories — mechanism, half-life, and documentation.

Written for the Texas research community, this reference brings together the documentation Texas metabolic-research programs compare on weight-related peptides that labs from Austin to Houston, Dallas to San Antonio typically request when qualifying a new lot. Every batch we dispatch from our Texas warehouse ships with the analytical documentation described below.

Weight-loss peptides studied in Texas metabolic-research programs are dominated by GLP-1 and multi-incretin receptor agonists, supplemented by lipolytic fragments such as AOD-9604. The table below summarizes the major documented profiles.

CompoundMechanismHalf-life (research)Reference dose range
TirzepatideGIP + GLP-1 agonist~5 days2.5–15 mg weekly
SemaglutideGLP-1 agonist~7 days0.25–2.4 mg weekly
RetatrutideGIP + GLP-1 + GCG agonist~6 daysPer published trial titration
AOD-9604Lipolytic hGH fragmentShortPer published research literature

Documentation common to all weight-loss research peptides

  • HPLC purity ≥98%
  • LC-MS confirmed identity
  • Counterion content
  • Endotoxin per analytical method

Pep Labs 365 ships every research peptide from our Texas facility with a lot-matched Certificate of Analysis, third-party HPLC purity, and LC-MS identity confirmation.

Research use only. Pep Labs 365 supplies materials strictly for in vitro and laboratory research from our Texas facility. Nothing in this article is medical, therapeutic, or dosage guidance for human or animal use.

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