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CalculatePeptide
Generic calculator

Blended Vial Calculator

For any multi-peptide vial. Enter the component mg values, bacteriostatic water volume, and your target dose — the calculator returns the exact syringe draw and the amount of each component delivered per injection. Handles 2-way and 3-way blends as well as larger combinations.

Blended-vial calculator

For vials containing 2+ peptides in one lyophilized powder. Enter each component's mg — the calculator handles the proportional math.

mg

If set and it differs from the sum of components below, the calculator will flag the mismatch.

mL
Draw to
—
units on the syringe
Equivalent volume: — mL
Per-injection component breakdown
Component Delivered per dose
Preview of the illustrated reconstitution guide
Free download

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.

Popular pre-filled blends

If your blend is one of these, use the dedicated page for pre-filled defaults and per-blend FAQ.

Blended vial calculator FAQ

What is a blended peptide vial? +
A blended vial contains two or more peptides pre-mixed in a single lyophilized powder. Adding bacteriostatic water once produces a solution where every draw delivers a fixed ratio of all the components at the same time.
How do I know the mg of each component in my blend? +
The vendor label should list each component's mg individually. If the label only shows a total mg number, ask the vendor for the breakdown — the component ratio is what determines how much of each peptide you get per draw.
Why does my blend's stated total differ from the sum of components? +
Common reasons: vendors include copper-ion mass (for GHK-Cu blends), rounding on the label, or excipients / stabilizers in the formulation. If the calculator flags a mismatch, use the component sum as the authoritative total.
Should I target a total-blend dose or a specific-component dose? +
Depends on what you're tracking. If the blend is marketed for a single primary effect (e.g. the BPC-157 component is what you care about), target that specific component. If all components contribute to your goal (healing blends like KLOW), target a total-blend dose and let the calculator show how much of each you get at that draw.
Which blends have dedicated pages with pre-filled defaults? +
The following blends have pre-filled calculator pages: Wolverine Blend, KLOW Blend, GLOW Blend, CJC/Ipamorelin Blend, Reta/AOD Blend, Sermorelin/Ipamorelin Blend, Selank/Semax Blend, Longevity Blend. For any other blend, use this generic calculator and enter your components manually.