Peptide Reconstitution Calculator
Enter your vial strength, the volume of Laboratory Dilutent Solution used, and your target measurement. The calculator returns the exact insulin-syringe draw, the resulting concentration, and how many measurements the vial contains.
Peptide Strength
total mg in the vialLaboratory Dilutent Solution
volume added to the vialTarget Dose
0.5 mg = 500 mcg (µg)Syringe View
Draw to 10 unitsHow the math works
Divide the vial strength by the Laboratory Dilutent Solution added. A 10 mg vial with 2 mL of water is 5 mg/mL.
Divide the target amount by the concentration. 0.5 mg at 5 mg/mL is 0.1 mL.
Multiply the volume in mL by 100. 0.1 mL is 10 units on a U-100 insulin syringe.
Common peptide reconstitution examples
| Vial strength | Laboratory Dilutent Solution | Concentration | Target amount | U-100 units |
|---|---|---|---|---|
| 5 mg | 2 mL | 2.5 mg/mL | 0.25 mg | 10 units |
| 10 mg | 2 mL | 5 mg/mL | 0.5 mg | 10 units |
| 10 mg | 3 mL | 3.33 mg/mL | 1 mg | 30 units |
| 15 mg | 3 mL | 5 mg/mL | 2.5 mg | 50 units |
| 20 mg | 2 mL | 10 mg/mL | 1 mg | 10 units |
| 50 mg | 5 mL | 10 mg/mL | 2 mg | 20 units |
Peptide calculator questions
How do I calculate peptide dosage in syringe units?
Divide the vial strength in milligrams by the milliliters of Laboratory Dilutent Solution to get concentration in mg/mL. Divide your target amount by that concentration to get the draw volume in mL, then multiply by 100 for units on a U-100 insulin syringe.
How much Laboratory Dilutent Solution should I add to a peptide vial?
Any volume works mathematically — the water only changes concentration, not the total milligrams in the vial. Most people pick a volume that puts a typical draw between 10 and 50 units so the measurement is easy to read. Enter different water volumes above to compare.
What is a U-100 insulin syringe unit?
On a U-100 syringe, 100 units equals 1.0 mL, so 1 unit is 0.01 mL. The calculator reports units on that scale, which is the marking used on standard insulin syringes.
How many doses are in my vial?
Divide the total milligrams in the vial by your target amount per draw. A 10 mg vial drawn at 0.5 mg yields 20 draws regardless of how much water was added.
Need supplies or reference material? Browse research peptides, pick up Laboratory Dilutent Solution, or read the research library.
This calculator is an arithmetic tool provided for laboratory reconstitution planning. All North Summit Labs materials are supplied for in-vitro research use only and are not for human or animal use. Nothing here is dosing guidance or a medical recommendation. See our FDA disclaimer and terms.