LL-37 peptide calculator
A 5 mg LL-37 vial mixed with 2 ml of bacteriostatic water holds 2.5 mg/ml. A 1 mg dose is 0.40 ml — 40 units on a U-100 insulin syringe — and the vial holds 5 doses of that size.
LL-37 dosage chart: units to draw
Units on a U-100 insulin syringe (100 units = 1 ml) for LL-37 doses from 500 mcg to 5 mg, by how much bacteriostatic water is in a 5 mg vial. The highlighted row is the 1 mg dose used above.
| Dose | 1 ml water 5 mg/ml | 2 ml water 2.5 mg/ml | 3 ml water 1.67 mg/ml | Doses per vial |
|---|---|---|---|---|
| 500 mcg | 10 u 0.10 ml | 20 u 0.20 ml | 30 u 0.30 ml | 10 |
| 1 mg | 20 u 0.20 ml | 40 u 0.40 ml | 60 u 0.60 ml | 5 |
| 1.5 mg | 30 u 0.30 ml | 60 u 0.60 ml | 90 u 0.90 ml | 3 |
| 2 mg | 40 u 0.40 ml | 80 u 0.80 ml | 1.20 ml over 100 u | 2 |
| 5 mg | 100 u 1.00 ml | 2.00 ml over 100 u | 3.00 ml over 100 u | 1 |
A 40-unit draw fits a 0.5 ml insulin syringe (50-unit capacity) with 1-unit markings.
Unit math only, not a dosing recommendation. The dose range is what published protocols and trials describe; see the LL-37 guide for sources.
How to reconstitute LL-37
- Wipe both vial stoppers with a fresh alcohol swab and let them dry.
- Draw 2 ml of bacteriostatic water into a syringe.
- Insert the needle at an angle into the LL-37 vial and let the water run slowly down the inner wall — do not inject directly onto the powder.
- Do not shake. Gently swirl the vial until the peptide fully dissolves.
- Storage for LL-37: Lyophilized: refrigerated or frozen. Reconstituted: refrigerated, use within 14 days.
- For a 1 mg dose, draw to the 40-unit mark (0.40 ml) on a U-100 insulin syringe.
About LL-37
LL-37 is the active C-terminal fragment of the human cathelicidin hCAP-18. It has broad-spectrum antimicrobial activity and immunomodulatory effects, and is studied in wound healing, chronic infection, and immune-dysfunction research.
Half-life: Approximately 1–2 hours (plasma)
Typical dose range: 1–5 mg per injection (research protocols vary)
Class: Cationic antimicrobial peptide
Regulatory status: Not FDA approved. Research use only in the US.
Read the full LL-37 guide → — mechanism, side effects, storage, regulatory status and citations. Or browse the whole peptide glossary.
Other tools for LL-37
Calculators for related peptides: KPV.
Need a different unit or a different question? The peptide dose converter moves a dose between mcg, mg and IU, and the LL-37 half-life chart shows how concentration accumulates across a dosing cadence. Loading LL-37 into a reusable 3 ml pen instead of drawing it with a syringe? The peptide pen calculator turns the same vial into mcg per click and clicks to dial. All of them are listed on the free peptide tools page.
LL-37 calculator FAQ
Is this a LL-37 peptide calculator or a reconstitution calculator?
Both. This LL-37 calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
How much bacteriostatic water for a 5 mg LL-37 vial?
This page is pre-filled with 2 ml of bacteriostatic water for a 5 mg LL-37 vial because that is a common research ratio. You can adjust the water amount in the full calculator.
How many units is a 1 mg LL-37 dose?
40 units on a U-100 insulin syringe, when a 5 mg vial is mixed with 2 ml of bacteriostatic water (2.5 mg/ml). That is 0.40 ml. With a different amount of water the unit count changes — the dose chart on this page lists 1 ml, 2 ml, 3 ml mixes.
How many doses are in a 5 mg LL-37 vial?
5 doses of 1 mg. The number of doses depends only on vial strength and dose size — adding more or less water changes the volume of each draw, not how many draws the vial holds.
Does this LL-37 dosage calculator give medical advice?
No. It only performs unit math. Dosing, titration, and whether LL-37 is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Skip the math — let the app handle it
Peptide Protocol remembers your LL-37 vial, shows the units for every dose, tracks what is left, and rotates injection sites for you.
Get the iPhone app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.