Peptide Types, Categories and Blends
A peptide blend is two or more peptides freeze-dried together into one vial at a fixed ratio, so a 10 mg blend is not 10 mg of each — the total is shared between its components. Separate vials keep the compounds independent and let you set the ratio. Catalogue categories group peptides by the field of research that studies them. Australian Research Peptides lists its own blends as single fixed-ratio vials for laboratories and researchers.
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What Is a Peptide Blend?
A peptide blend is two or more peptides freeze-dried together into one vial, in a fixed ratio. Most vials in a catalogue hold a single compound; a blend holds several. BPC-157 + TB-500 is a two-part example, and KLOW combines four.
Blends exist because some compounds are so often studied together that one vial saves preparing two, and because drying them together locks the ratio — every preparation from that vial carries the same proportions.
Should You Buy a Blend or Separate Vials?
The choice comes down to whether you need the two compounds to stay independent. Separate vials keep them independent; a blend fixes a studied combination into one preparation.
| A blend | Separate vials | |
|---|---|---|
| Ratio | Fixed. You cannot change it | Yours to set |
| Preparation | One vial to mix | Two vials to mix |
| Attributing a result | You cannot tell which component caused it | You can test them apart |
How a certificate documents a multi-part vial is covered in how to read a certificate, and the cell-signalling pairing behind our two-part blend has its own comparison guide.
Which Peptide Blends Are Currently Listed?
A peptide blend can mean two different things, and the difference decides what arrives. A pre-mixed blend is several peptides freeze-dried into one vial at a fixed ratio; a bundle is several sealed vials ordered together. The panel below is read from the catalogue rather than written by hand.
| Blend | Nominal total | Nominal components | Format | Documentation | Availability today | More detail |
|---|---|---|---|---|---|---|
| BPC-157 + TB-500 | 10 mg | BPC-157 ~5 mg + TB-500 ~5 mg | Single blended vial | Certificate published | Out of stock | Guide |
| CJC-1295 (no DAC) + Ipamorelin | 10 mg | CJC-1295 (no DAC) ~5 mg + Ipamorelin ~5 mg | Single blended vial | Certificate published | In stock | Guide |
| GLOW | 70 mg | BPC-157 ~10 mg + TB-500 ~10 mg + GHK-Cu ~50 mg | Single blended vial | Certificate published | In stock | Guide |
| KLOW | 80 mg | GHK-Cu ~50 mg + BPC-157 ~10 mg + TB-500 ~10 mg + KPV ~10 mg | Single blended vial | Not yet published | Out of stock | Guide |
| Retatrutide Value Bundle | No single vial total | 2 × Retatrutide 10 mg + BAC Water 3 mL + 0.5 mL Graduated Syringes 20 Pack | Multi-item bundle | Listed per vial | In stock | Bundles |
| Retatrutide 20mg Starter Bundle | No single vial total | Retatrutide 20 mg + BAC Water 3 mL + 0.5 mL Graduated Syringes 20 Pack | Multi-item bundle | Listed per vial | In stock | Bundles |
| Retatrutide Mega Bundle | No single vial total | 3 × Retatrutide 10 mg + 2 × BAC Water 3 mL + 3 × 0.5 mL Graduated Syringes 20 Pack | Multi-item bundle | Listed per vial | In stock | Bundles |
| Retatrutide + Tesamorelin Bundle | No single vial total | Retatrutide 10 mg + Tesamorelin 10 mg + BAC Water 3 mL + 0.5 mL Graduated Syringes 20 Pack | Multi-item bundle | Listed per vial | In stock | Bundles |
| Reta + Tesa + MOTS-C Bundle | No single vial total | Retatrutide 10 mg + Tesamorelin 10 mg + MOTS-C 40 mg + 2 × BAC Water 3 mL + 3 × 0.5 mL Graduated Syringes 20 Pack | Multi-item bundle | Listed per vial | In stock | Bundles |
The nominal figures are formulation amounts, not assay results. A vial is compounded to a stated ratio and the laboratory then measures whatever it measures, which is why the components column carries a tilde. Where a certificate exists it is the document that reports what was found.
Why Does the Exact Sequence Matter?
A peptide’s sequence is its identity. Change one amino acid and you have a different molecule, with a different weight and possibly very different behaviour. That is why testing checks the weight against the expected sequence, and why two products with similar names are not interchangeable.
Length is part of the same story. Some research peptides are fragments — a short active section cut out of a larger natural molecule. A fragment is not the parent, and results proven for one do not automatically apply to the other. TB-500 and thymosin beta-4 are the classic case, and the BPC-157 vs TB-500 guide works through it.
What Does “Modified” Mean on a Label?
A modified peptide carries a deliberate chemical addition that changes how it behaves — usually how long it survives, or how well it dissolves. Not every research peptide is a straight copy of a natural sequence. Four modifications turn up most:
| Modification | What it does |
|---|---|
| Acetylation | Caps one end of the chain so the enzymes that chew peptides from that end cannot get a grip. It survives longer |
| Amidation | Changes the chemistry at the other end. Many natural signalling peptides are made this way, and it affects both stability and how the molecule meets its receptor |
| Lipidation, or acylation | Attaches a fatty chain. The added chain gives the molecule an albumin-binding site, so an acylated analogue is a distinct molecule |
| PEGylation | Attaches a long polyethylene glycol chain, raising both the molecular weight and the size the laboratory measures |
The practical point for anyone comparing products: a modified peptide is a different molecule from its unmodified version — different weight, different behaviour, different research behind it. The product page names the exact form supplied. GLP-1, GIP and glucagon receptor targeting sets out the receptor targets in that family.
What Is Molecular Weight For?
Molecular weight is how a laboratory confirms which molecule it has. The weight is decided entirely by the sequence and any modifications, so it can be calculated in advance. The measurement either matches that calculation or it does not.
Weights range widely across a catalogue, from a few hundred for very short chains to several thousand for longer or heavily modified ones. The figure on a certificate is one of the fastest ways to confirm which form of a compound you have.
What Are the Catalogue Categories?
The catalogue groups compounds by the field of research that studies them. A category says what a compound is studied for in the published literature. It is not a statement about effects, and no category name qualifies a material for any use outside a laboratory.
Metabolic Research
Peptides studied in metabolic research. Most of this field concerns the GLP-1, GIP and glucagon receptors, and single, dual and triple agonists differ by which of those receptors they bind in assays.
Melanocortin Agonists
Compounds studied at the melanocortin receptors, a family of five G-protein-coupled receptors, MC1R to MC5R. PT-141 and Melanotan II sit here.
Cell Signalling Research
Peptides studied in cell-signalling research — a field that works with cell-migration, collagen and endothelial models. BPC-157 and TB-500 anchor this category and are studied in different models.
Neuropeptide Research
Peptides studied in neurological research. Semax and Selank, both from Russian research programmes, are the main compounds here.
Copper Peptide Research
Peptides studied in copper-binding and extracellular-matrix biology. The copper peptide GHK-Cu is the centrepiece, and it has its own guide.
Mitochondrial Research
Peptides studied in how cells produce and handle energy. MOTS-C, a sequence written into the mitochondria’s own genetic material, defines the category.
GHRH and Secretagogue Research
Peptides studied at the GHRH and ghrelin (GHS-R1a) receptors — compounds such as CJC-1295, Ipamorelin and Tesamorelin.
Lab Supplies
The consumables the rest of the catalogue needs: bacteriostatic water as a diluent, and syringes. These are not peptides and are priced and discounted differently.
Bundles
Fixed sets combining several products in one order, usually a peptide with the water and syringes needed alongside it.
The blends set out here are catalogued by Australian Research Peptides as single vials rather than as pairs to combine — BPC-157 + TB-500, CJC-1295 (no DAC) + Ipamorelin, GLOW and KLOW — each dried at a fixed ratio, tested as one batch and sent from Sydney.
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