Peptide Handling Guides

A structural, pharmacokinetic and regulatory comparison of two GHRH analogues, with verified molecular weights, DPP-4 data and published half-life figures.

Frontier Peptide Labs supplies research peptides in three formats — lyophilized vials, capsules, and liquid sprays. The compound is the same across formats; what differs is precision, handling requirements, and shelf life. Choosing the right format for a given research protocol comes down to those three tradeoffs. Lyophilized Vials Vials ship as a freeze-dried (lyophilized) […]

BPC-157 and TB-500 are two of the most frequently co-studied peptides in tissue-repair research, and Frontier Peptide Labs sells both individually and as a combined blend. They are structurally unrelated and act through different mechanisms, but their overlapping research applications make a side-by-side comparison useful for choosing — or combining — the right research tool. […]

  Frontier Peptide Labs Research Library A-Z Research Peptide Glossary: Key Terms for Laboratory Research This A-Z glossary explains common terms used across Frontier Peptide Labs product pages, research guides, and laboratory-focused educational content. It includes definitions related to research peptides, GLP compounds, lyophilized vials, HPLC analysis, LC-MS verification, peptide receptor biology, molecular signaling, metabolic […]

Most research-grade peptides ship as a lyophilized (freeze-dried) solid rather than a ready-to-use aqueous solution. Understanding why lyophilization is the standard format helps laboratory researchers handle, store, and reconstitute peptides without compromising sample quality. The freeze-drying process. Lyophilization removes water from a frozen sample by sublimation under vacuum — the ice transitions directly from solid […]

A Certificate of Analysis (COA) is the document that connects a bench-grade research peptide to the analytical data establishing its identity, purity, and lot history. For reproducible in vitro and animal-model work, understanding how to read and interpret a COA is foundational laboratory practice. Identity confirmation. The first analytical section typically reports mass-spectrometry (MS) data […]

Not every research compound dissolves cleanly in water. Hydrophobic small molecules and peptides — including Tesofensine, Dihexa, Tesofensine analogs, and several lipid-modified peptides — require non-aqueous or mixed-solvent reconstitution. Solvent choice affects solubility, assay compatibility, and downstream biological readouts. Assessing solubility from structure. Highly lipophilic structures with aromatic side chains, long alkyl moieties, or absence […]

Most lyophilized research peptides survive ambient shipping for short transit windows, but receiving practices and downstream storage materially affect long-term sample integrity. Laboratories handling multiple peptide products should establish a documented receiving workflow to preserve potency and traceability. Receiving inspection. On delivery, inspect the package for physical damage and verify that the vial, label, and […]

Combination peptide vials — formulated with two or more peptides co-lyophilized in a single container — are increasingly common in research workflows where comparative or synergistic in vitro and animal-model studies are planned. Reconstitution math for blends requires explicit accounting of each constituent’s concentration, since dose-response analyses depend on knowing the exact amount of each […]

Many research peptides are dosed at microgram or sub-microgram quantities in cell-culture and animal-model experiments. At these volumes, pipetting error becomes a dominant source of variability in dose-response data, often exceeding the biological signal under study. This guide covers the technique and equipment fundamentals for accurate small-volume peptide work. Pipette selection and calibration. Air-displacement pipettes […]