Retatrutide Reconstitution Calculator
A triple agonist (GLP-1/GIP/glucagon) representing the newest class in GLP-axis research. This page works out concentration, volume per measured amount, syringe units and preparations per vial for a reconstituted Retatrutide preparation, plus the mass-to-molar conversions for its stated molecular weight. Everything runs in your browser; nothing is transmitted or stored.
Also referenced as: LY3437943
Results
- Concentration
- 2.5 mg/mL (2,500 mcg/mL)
- Per syringe unit
- 25 mcg per unit
- Volume per preparation
- 0.1 mL
- Syringe units to draw
- 10 units
- Preparations per vial
- 20 preparations
Worked example: a 5 mg vial reconstituted with 2 mL of bacteriostatic water. Change any input to recalculate.
A unit-conversion reference for laboratory work. Not a dosing recommendation and not an instruction for human use.
The pre-filled example, step by step
The inputs above are the neutral reference preparation this site uses everywhere the calculator appears: a 5 mg vial, 2 mL of bacteriostatic water, and a 250 mcg target amount. They are not a property of Retatrutide and not an amount anyone should draw — they exist so the arithmetic is visible before you change anything.
- Concentration. 5 mg ÷ 2 mL = 2.5 mg/mL (2,500 mcg/mL), which for Retatrutide is approximately 0.5284 mM at its stated molecular weight.
- Per syringe unit. A U-100 syringe divides 1 mL into 100 units, so one unit holds 2,500 mcg ÷ 100 = 25 mcg.
- Volume for the 250 mcg target. 250 mcg ÷ 2,500 mcg/mL = 0.1 mL, or 10 units on that syringe.
- Preparations per vial. 5,000 mcg ÷ 250 mcg = 20 preparations.
Arithmetic on a laboratory preparation, shown as a unit-conversion reference. Not medical advice, not a dosing recommendation, not an instruction for human use. The full derivation, and why the diluent volume is a choice rather than a constant, is on the main reconstitution calculator.
Mass and molar equivalents for Retatrutide
Derived from the molecular weight recorded on the Retatrutide entry: ~4731 g/mol — the entry states this as an approximate figure, so the equivalents below are approximate too. Concentration in molar units is what an in-vitro protocol is usually specified in.
| Quantity | Molar equivalent |
|---|---|
| 1 mg of Retatrutide | 211.4 nmol (0.2114 µmol) |
| 1 mcg of Retatrutide | 0.2114 nmol |
| A 1 mg/mL solution | 0.2114 mM (211.4 µM) |
Molar amount = mass ÷ molecular weight. Figures are shown to four significant digits and are a unit conversion, not a measurement.
Reconstitution recorded for Retatrutide
Lyophilized powder typically reconstituted with bacteriostatic water; refrigerate and protect from light after reconstitution.
Quoted from the Retatrutide entry. Amounts reported in the research literature for this compound are documented on that entry, under the disclaimer they belong with — they are not reproduced next to a calculator. Read the full Retatrutide entry.
Handling questions for Retatrutide
What documentation should be expected for research-grade retatrutide?
Because it is a complex acylated peptide, a third-party COA with HPLC purity (commonly greater than or equal to 98%) and mass-spec identity confirmation is the standard reference to expect. Lyophilized material is stored cold and reconstituted with bacteriostatic water for research handling; freeze-thaw cycles and light exposure are avoided.
Answers are published on the Retatrutide entry. Educational summaries of research-literature context, not medical advice.
Continue exploring
- Full Retatrutide entry — Triple GIP/GLP-1/glucagon receptor agonist
- Reconstitution calculator — the maths in full, with a second worked example
- Storage & Handling guide
- Bacteriostatic water — what it is and how it differs from sterile water
- Compare Retatrutide with another library entry