Peptide LibraryHow many units is 5 mg?
5 mg is 100 units on a U-100 insulin syringe when the solution is 5 mg/mL (a 10 mg vial mixed with 2 mL of water), which is 1 mL. The number of units depends on the concentration: from 50 units at 10 mg/mL to 200 units at 2.5 mg/mL.
For research use only. Not medical advice. This page converts an amount; it does not recommend one.
5 mg at common concentrations
| Vial and water | Concentration | Volume | U-100 units | U-40 units |
|---|---|---|---|---|
| 5 mg in 2 mL | 2.5 mg/mL | 2 mL | 200 units (more than one 1 mL syringe) | 80 units |
| 10 mg in 3 mL | 3.33 mg/mL | 1.5 mL | 150 units (more than one 1 mL syringe) | 60 units |
| 10 mg in 2 mL | 5 mg/mL | 1 mL | 100 units | 40 units |
| 15 mg in 2 mL | 7.5 mg/mL | 0.667 mL | 66.7 units | 26.7 units |
| 10 mg in 1 mL | 10 mg/mL | 0.5 mL | 50 units | 20 units |
Concentration is the mg in the vial divided by the mL of water added. Units measure volume: 100 units fill 1 mL on a U-100 syringe.
Convert another amount
At 5 mg/mL on a U-100 syringe.
Draw 0.50 mL (≈ 50 units on a 0.5 mL syringe)
Common questions
Do insulin syringe units depend on the peptide?
No. Units are marks of volume: on a U-100 syringe, 100 units fill 1 mL. What changes between peptides is the concentration of the solution, which is the mg in the vial divided by the mL of water added.
What if my syringe is U-40?
A U-40 syringe has 40 marks per mL, so the same volume reads as 2.5 times fewer units. Read the scale printed on the syringe and use the matching column.
Is 5 mg a typical amount?
This page converts 5 mg because people search for that number. It is not a suggested amount; Peptide Library does not recommend doses. The library's profiles list what published studies used, with sources.