GLOW Blend vs KLOW Blend
Composition comparison · research use only
GLOW and KLOW are co-formulations — several peptides supplied together in one lyophilized vial. They share three of their components. The difference is a single added peptide, and that is the whole distinction.
| Property | GLOW | KLOW |
|---|---|---|
| Components | BPC-157 · GHK-Cu · TB-500 | BPC-157 · TB-500 · KPV · GHK-Cu |
| Component count | 3 | 4 |
| Shared with the other blend | All three appear in KLOW | Three of four appear in GLOW |
| Unique component | None — GLOW is a subset | KPV (Lys-Pro-Val, CAS 67727-97-3) |
| Supplied format | Single vial, lyophilized co-formulation | Single vial, lyophilized co-formulation |
| Purity standard | ≥99.2% per component (HPLC) | ≥99.2% per component (HPLC) |
| COA reporting | Identity + purity confirmed per component | Identity + purity confirmed per component |
Component reference
Every component in both blends is also available as a single-compound reference material, each with its own guide: BPC-157, TB-500, GHK-Cu and KPV. KPV is the smallest peptide in either blend — a tripeptide at 342.44 g/mol corresponding to the C-terminal tripeptide of alpha-MSH.
What "per component" purity means
A co-formulation cannot be described by one purity number. Each lot is analysed so that every component is separately identified and quantified, and each must independently meet the ≥99.2% floor. That is what the Certificate of Analysis for a GLOW or KLOW lot reports — not a single blended figure. See how to read a COA.
Supplied strictly as a research reference material for in-vitro laboratory use. Not for human or veterinary use.
Frequently asked questions
What is the difference between GLOW and KLOW?
KLOW contains the same three peptides as GLOW (BPC-157, TB-500, GHK-Cu) plus a fourth, KPV. GLOW is effectively a three-component subset of KLOW.
How is purity reported for a blend?
Per component. Each peptide in the co-formulation is separately identified and quantified on the lot Certificate of Analysis, and each must independently meet the ≥99.2% floor.