Use an SS-31 dosage calculator to turn peptide mass, diluent volume, and body weight into syringe units. See the formula, a worked example, and safety notes.
An SS-31 dosage calculator converts a target dose — usually written as milligrams or micrograms per kilogram of body weight — into the volume you draw into a syringe. It combines the total peptide mass in the vial, the volume of diluent added during reconstitution, and the body weight of the subject. The calculator performs unit conversion only; it does not determine a safe, effective, or legal dose.
What an SS-31 Dosage Calculator Actually Does
A dosage calculator is a narrow math tool. It answers one question: If I need X mg per kg and my vial is Y mg/mL, how many milliliters or units do I draw?
It does not tell you whether to use SS-31, how often to inject it, or what dose is safe. SS-31 (elamipretide) is not FDA-approved for general human use in the United States. Most available data comes from laboratory research and early-phase clinical trials.
- What it does: convert peptide mass, diluent volume, and body weight into concentration and injection volume.
- What it does not do: recommend a dose, diagnose a condition, or replace a clinician's judgment.
The Three Inputs Every SS-31 Calculation Needs
Every version of the formula uses the same three inputs. If any one of them is wrong, the final volume will be wrong.
- Peptide mass in the vial (mg): common research vials are labeled 5 mg, 10 mg, or 30 mg.
- Reconstitution volume (mL): the amount of bacteriostatic water or sterile saline you add to the powder.
- Body weight (kg): needed when the dose is written as mg/kg or mcg/kg rather than as a flat amount.
From the first two inputs you get concentration in mg/mL. From concentration and the target dose you get the injection volume. A calculator simply automates those steps.
SS-31 Dosage Formula, Step by Step
The math is the same whether you use an online calculator or a pen and paper. Work through these four steps in order.
- Concentration = peptide mass ÷ reconstitution volume. A 10 mg vial mixed with 2 mL of diluent gives 5 mg/mL.
- Target dose in mg = dose per kg × body weight in kg. For a 70 kg subject and a protocol calling for 0.1 mg/kg, the target is 7 mg.
- Injection volume = target dose ÷ concentration. 7 mg ÷ 5 mg/mL = 1.4 mL.
- Syringe units = injection volume in mL × 100 (for a U-100 syringe). 1.4 mL = 140 units.
That last step confuses many people. Units on a U-100 insulin syringe are simply hundredths of a milliliter, so 100 units equals 1 mL. A U-40 syringe uses a different scale, and mixing the two can cause a large dosing error.
Worked Example: 10 mg Vial, Varying Diluent Volumes
Changing the reconstitution volume changes the concentration and the volume you draw, but it never changes the total amount of peptide in the vial. The table below shows how a 10 mg vial behaves with three different diluent volumes.
| Diluent added | Concentration | Peptide per unit (U-100) | Volume for a 1 mg dose |
|---|---|---|---|
| 1 mL | 10 mg/mL | 100 mcg | 0.1 mL (10 units) |
| 2 mL | 5 mg/mL | 50 mcg | 0.2 mL (20 units) |
| 5 mL | 2 mg/mL | 20 mcg | 0.5 mL (50 units) |
Notice the pattern: adding more water makes each unit weaker. If you double the diluent, you must double the volume to deliver the same dose. This is why the ss-31 dosage you actually draw depends on the protocol and the vial, not on a single fixed number.
SS-31 Reconstitution and Dosage: Matching the Math to the Vial
Reconstitution is the step where most calculation errors begin. A careful ss-31 reconstitution and dosage routine starts with reading the vial label and recording the exact mass.
- Use bacteriostatic water for multi-draw vials; it contains 0.9% benzyl alcohol to slow bacterial growth.
- Use sterile water or saline when the peptide will be used immediately or when benzyl alcohol is not appropriate.
- Swirl or roll the vial gently. Do not shake it, because foaming can degrade the peptide.
- Write the reconstitution date and concentration on the vial label.
- Store reconstituted peptide refrigerated, typically at 2–8 °C (36–46 °F), and follow the supplier's stability guidance.
Some researchers prefer a ready-made guide to ss 31 peptide dosage rather than doing the arithmetic manually. A calculator is faster, but manual verification is a good habit.
For a deeper look at typical research ranges, a separate article on ss-31 peptide dosage covers how dose selection is discussed in the literature.
Common Mistakes With an SS-31 Dosage Calculator
- Mixing up mg and mcg. 1 mg = 1,000 mcg. A decimal error here can be a thousand-fold mistake.
- Assuming all vials are the same. A 5 mg vial and a 30 mg vial need different calculations even if the diluent volume is identical.
- Forgetting the syringe scale. U-100, U-40, and 1 mL tuberculin syringes all mark volume differently.
- Borrowing a dose from another species or study. A dose used in a mouse model does not automatically translate to humans.
- Rounding too early. Keep two or three decimal places during the math, then round only the final volume.
A documented ss 31 dosage protocol should come from a clinician, a pharmacist, or an institutional review board — not from a calculator alone.
Safety, Legality, and Professional Oversight
SS-31 is regulated as a research chemical in the United States. The FDA has not approved elamipretide for general human use, and peptides sold online are frequently mislabeled or impure.
If a licensed healthcare professional has prescribed SS-31 or a related peptide, that professional should provide the dose, frequency, and monitoring plan. Bring the vial label and your calculated volume to the appointment so the numbers can be verified.
Stop and seek medical attention for signs of an allergic reaction, injection-site infection, or any sudden change in health. A dosage calculator cannot detect a bad reaction or an unsafe product.
Frequently Asked Questions
How do I use an SS-31 dosage calculator?
Enter the peptide mass in the vial, the volume of diluent you added, and the subject's weight in kilograms. The calculator returns the concentration in mg/mL and the injection volume in milliliters or syringe units. It does not choose a dose for you; that number must come from a clinician or a research protocol.
What is the standard SS-31 dosage in mg?
There is no FDA-approved standard dose because elamipretide is not approved for general human use in the United States. Doses studied in research vary widely by condition, route, and model. A dosage calculator can convert a dose you already have, but it cannot establish a safe human dose.
Do I need bacteriostatic water to reconstitute SS-31?
Most laboratory protocols use bacteriostatic water or sterile saline. Bacteriostatic water contains 0.9% benzyl alcohol, which slows bacterial growth and supports multiple draws from one vial. Sterile water is usually preferred when the peptide will be used right away or when benzyl alcohol is not suitable.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.