What is a peptide blend?

Two peptides, one cake.

In a blend, each peptide is synthesized and purified on its own, then the two are weighed, dissolved together, filtered and freeze-dried in the vial. The result is one lyophilized cake that contains both sequences in a fixed ratio. A blend is different from a kit, which packs separate vials in one box, and from a fusion peptide, which joins two sequences into one longer chain. The two components of a blend remain separate molecules.

A mass for each component.

A blend label lists the components and the mass of each, for example 5 mg of CJC-1295 and 5 mg of ipamorelin in a vial sold as 10 mg. The total on the front of the label is the sum, so a 10 mg blend holds 5 mg of each peptide, not 10 mg of each. Trade names such as Wolverine, GLOW and KLOW are vendor names for particular combinations, not standard names, so the components and masses should always be spelled out. Peptide vial codes explains how Helion's codes encode the compound and the mass.

Two of everything.

A Certificate of Analysis for a blend has to treat each component as its own analyte. Identity needs two mass spectrometry results, one at each expected molecular weight. HPLC shows two main peaks, and purity is reported for each component, with any extra peaks counted as impurities. Content is measured for each peptide so the ratio on the label can be checked. A blend report that shows a single purity number has either averaged two peptides or tested only one, and neither tells a researcher what is in the vial. How to read a peptide COA covers each of these sections.

Three families.

CJC-1295 with ipamorelin pairs a GHRH analogue with a ghrelin-receptor pentapeptide; CJC-1295 vs ipamorelin compares the two molecules and DAC vs no DAC explains which CJC-1295 is usually in the vial. BPC-157 with TB-500, sold under names such as Wolverine, pairs a fifteen-residue gastric pentadecapeptide with a thymosin beta-4 fragment; see BPC-157 vs TB-500. Multi-peptide blends such as GLOW and KLOW combine three or four peptides, and the same rule applies: one identity and one purity result per component.

Treated as the more delicate component.

A blend is stored like any lyophilized peptide, sealed, dry, in the dark and cold. Where the two components differ in stability, the vial is handled as if it were the less stable one. How to store lyophilized peptides and how long peptides last cover the conditions.

Two blends, both reported per component.

Helion supplies CJC-1295 (no DAC) with ipamorelin, 5 mg of each in a 10 mg vial, and the Wolverine blend of BPC-157 with TB-500, 5 mg of each. Each lot's report in the COA Portal shows identity and purity for both components.

Specs and storage by compound.