PeptiDex
Research Tool

Tirzepatide Reconstitution Calculator

A dual GIP/GLP-1 receptor agonist of significant interest in metabolic peptide research. This page works out concentration, volume per measured amount, syringe units and preparations per vial for a reconstituted Tirzepatide 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: LY3298176

Dual GIP/GLP-1 receptor agonistMW 4813.5 g/molt½ ~5 days
For research and educational purposes only. This is a unit-conversion tool for laboratory reference. It is not medical advice, not a dosing recommendation, and not an instruction for human use.

Inputs

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 Tirzepatide and not an amount anyone should draw — they exist so the arithmetic is visible before you change anything.

  1. Concentration. 5 mg ÷ 2 mL = 2.5 mg/mL (2,500 mcg/mL), which for Tirzepatide is approximately 0.5194 mM at its stated molecular weight.
  2. Per syringe unit. A U-100 syringe divides 1 mL into 100 units, so one unit holds 2,500 mcg ÷ 100 = 25 mcg.
  3. Volume for the 250 mcg target. 250 mcg ÷ 2,500 mcg/mL = 0.1 mL, or 10 units on that syringe.
  4. 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 Tirzepatide

Derived from the molecular weight recorded on the Tirzepatide entry: 4813.5 g/mol. Concentration in molar units is what an in-vitro protocol is usually specified in.

Mass to molar conversions for Tirzepatide at its stated molecular weight.
QuantityMolar equivalent
1 mg of Tirzepatide207.7 nmol (0.2077 µmol)
1 mcg of Tirzepatide0.2077 nmol
A 1 mg/mL solution0.2077 mM (207.7 µM)

Molar amount = mass ÷ molecular weight. Figures are shown to four significant digits and are a unit conversion, not a measurement.

Reconstitution recorded for Tirzepatide

Lyophilized powder typically reconstituted with bacteriostatic water; refrigerate and protect from light after reconstitution.

Quoted from the Tirzepatide 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 Tirzepatide entry.

Handling questions for Tirzepatide

What purity and documentation should be expected for research-grade tirzepatide?

A third-party COA with HPLC purity (commonly greater than or equal to 98%) and mass-spec identity confirmation is the standard reference documentation. Lyophilized peptide should be stored cold and reconstituted with bacteriostatic water for research handling, protected from light and freeze-thaw cycles.

Answers are published on the Tirzepatide entry. Educational summaries of research-literature context, not medical advice.

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