Semaglutide Reconstitution Calculator
A long-acting GLP-1 receptor agonist extensively studied in metabolic and appetite-regulation research. This page works out concentration, volume per measured amount, syringe units and preparations per vial for a reconstituted Semaglutide 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: NN9535, NN9924
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 Semaglutide 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 Semaglutide is approximately 0.6077 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 Semaglutide
Derived from the molecular weight recorded on the Semaglutide entry: 4113.6 g/mol. Concentration in molar units is what an in-vitro protocol is usually specified in.
| Quantity | Molar equivalent |
|---|---|
| 1 mg of Semaglutide | 243.1 nmol (0.2431 µmol) |
| 1 mcg of Semaglutide | 0.2431 nmol |
| A 1 mg/mL solution | 0.2431 mM (243.1 µM) |
Molar amount = mass ÷ molecular weight. Figures are shown to four significant digits and are a unit conversion, not a measurement.
Reconstitution recorded for Semaglutide
Lyophilized powder typically reconstituted with bacteriostatic water; refrigerate and protect from light after reconstitution.
Quoted from the Semaglutide 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 Semaglutide entry.
Handling questions for Semaglutide
How is lyophilized semaglutide typically reconstituted in research settings?
Lyophilized semaglutide is commonly reconstituted with bacteriostatic water, with the diluent volume chosen to give a convenient concentration for the study's measurement units. Once reconstituted it is generally kept refrigerated and protected from light, and freeze-thaw cycles are avoided. A COA/HPLC purity report (commonly greater than or equal to 98%) is the standard quality reference to expect.
Answers are published on the Semaglutide entry. Educational summaries of research-literature context, not medical advice.
Continue exploring
- Full Semaglutide entry — GLP-1 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 Semaglutide with another library entry