Free research tool
Peptide Blend Calculator
Multi-peptide blends — KLOW, GLOW, Wolverine and any custom mix — cannot be calculated from the total milligrams on the label, because that figure is every component added together. This calculator works each component separately from the split in your own vial. Concentration math only: no dose, route, or frequency guidance.
A blend label’s milligram figure is the combinedmass of every component, so it cannot be used to calculate any single one. Enter each component’s own milligrams from your vial’s documentation — vendors do not standardise the split, so a figure from a different vial will not apply to yours.
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This tool performs concentration arithmetic only: component mg ÷ water mL = mg/mL, then amount ÷ concentration × 100 = units on a U-100 syringe. It does not recommend a dose, route or frequency, and “amount to draw” is whatever figure you enter — not a suggested amount. Research use only; not medical advice. Enter each component's milligrams and an amount to see results.
Why blends need different arithmetic
With a single-peptide vial, concentration is one division: total mg ÷ water mL. A blend breaks that, because the label’s figure is the combined mass of several peptides. An 80 mg KLOW vial holds 80 mg of BPC-157, TB-500, GHK-Cu and KPV in total— so 80 ÷ 2 mL tells you the solution is 40 mg/mL of “peptide”, which is not a thing you administer.
To get a usable number you need the per-component split from your vial’s documentation, and vendors do not standardise it.That has a specific consequence worth internalising: a unit figure copied from a forum post or a vendor page only ever applied to that vial’s split. It does not transfer. Enter your own component masses above and the arithmetic is done per component.
One further consequence: because every component shares one solution, a single draw delivers a fixed ratio of all of them. You cannot raise one and hold the others steady. If components need to move independently — and BPC-157 in micrograms alongside TB-500 in milligrams is exactly that case — separate vials are the only way to do it. For single-peptide vials use the reconstitution calculator.
The blends this is most used for
Three named blends account for most blend arithmetic. Each page sets out the full component list, what each component contributes, and the evidence position.
Reconstitution uses USP-grade bacteriostatic water — the 0.9% benzyl alcohol preservative is what allows a multi-dose vial to be entered more than once. An 80 mg blend vial is typically held reconstituted for longer than a single-peptide vial, so storage conditions matter more.
FAQ
How do you calculate a peptide blend?
Per component, not per vial. A blend label's milligram figure is the combined mass of every component, so dividing it by your water volume gives total peptide concentration — a number you never administer. For each component: component mg ÷ water mL = that component's mg/mL. Then amount ÷ concentration × 100 = units on a U-100 insulin syringe. Do that once per component.
Why can't I work out an 80 mg KLOW vial from the 80 mg figure?
Because 80 mg is BPC-157, TB-500, GHK-Cu and KPV added together, not 80 mg of each. Without the per-component split you cannot know any single component's concentration. Vendors do not standardise the split, so two 80 mg vials from different suppliers can contain materially different amounts of each peptide.
Can I use a dose figure I found for the same blend?
Only if it came with the split it was calculated from. A volume or unit figure only ever applied to that vial's particular split — carrying it to a different vendor's vial is not an approximation, it is an unrelated number. This is the single most common error in blend arithmetic.
Why does one component need more than 100 units?
Because too much water was added for that component's target amount. A standard 1 mL U-100 insulin syringe holds 100 units, so if the calculation exceeds that, reducing the water volume raises the concentration and brings the required units back into range. The calculator flags this.
Can I adjust one component of a pre-mixed blend?
No. All components share one solution, so a single draw delivers a fixed ratio of every component at once. That is an inherent property of a pre-mixed vial rather than a limitation of the arithmetic — if you need to vary components independently, separate vials are the only way to do it.
Does this calculator recommend a dose?
No. It performs concentration arithmetic only. The 'amount to draw' field is whatever figure you enter, not a suggested amount, and the tool never outputs a recommended dose, route or frequency. All content is research-use educational reference only and not medical advice.
Educational use only — not medical advice. This guide summarizes information reported in published research and community practice for educational purposes. It is not medical advice and not a recommendation to use any compound. Any doses, schedules, or combinations shown are examples of what has been reported, not instructions for you. Many peptides described here are research compounds that are not FDA-approved for the uses discussed and may be investigational or restricted. Effects, risks, and legal status vary; individual needs and results vary. Consult a qualified, licensed healthcare professional before making any decision. Do not use this content to diagnose, treat, or dose yourself.