KLOW Blend Calculator
KLOW is a term used in online peptide communities to describe a four-component blend containing GHK-Cu, BPC-157, TB-500, and KPV. The name is an acronym: K (KPV), L (unused in the expansion but cited historically), O/W from the combined formulation. Vendors who sell pre-blended KLOW typically weight the blend toward GHK-Cu, but compositions vary. Editable below.
Blended-vial calculator
For vials containing 2+ peptides in one lyophilized powder. Enter each component's mg — the calculator handles the proportional math.
| Component | Delivered per dose |
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Free Illustrated Reconstitution Guide (PDF)
8-step visual walkthrough with photos and tips — from gathering supplies to drawing your dose. Educational only — not medical advice.
Components in the KLOW Blend
Each peptide in this blend has its own individual calculator page with factual information on vial sizes, reported half-life, and storage. Compositions vary by vendor — the mg ratios above are defaults based on commonly cited formulations.
- GHK-Cu — A copper-binding tripeptide isolated from human plasma, studied for its role in extracellular matrix signaling and wound healing.
- TB-500 — A synthetic fragment of thymosin beta-4, the actin-sequestering protein studied for cytoskeletal dynamics in tissue repair.
- BPC-157 — A synthetic pentadecapeptide derived from a sequence found in human gastric juice, studied for tissue repair signaling mechanisms.
- KPV — A tripeptide corresponding to the C-terminal fragment of alpha-MSH, studied for anti-inflammatory signaling mechanisms.
How to use this calculator
The KLOW Blend calculator handles two dose-targeting modes:
- Target total blend dose — "I want 2 mg of the blend per injection." The calculator returns the draw volume and reports how much of each component you're getting at that draw.
- Target specific component — "I want 250 mcg of BPC-157 specifically." The calculator back-calculates the draw from that component's concentration, and reports incidental amounts of the other components delivered at the same draw.
If your vial's stated total mg differs from the sum of component mg values (common on vendor labels — rounding, copper-ion mass, excipients), the calculator flags the mismatch and uses the component sum as the authoritative total for math purposes.