Peptide reconstitution chart
Units to draw on a U-100 insulin syringe (100 units = 1 mL) for the most common vial sizes and water volumes, rounded to the nearest half unit. Water changes how many units a dose is, never how many doses the vial holds.
· Other vial sizes or doses: dosage calculator
2 mg vial
| Water | 100 mcg | 250 mcg | 500 mcg | 1 mg |
|---|---|---|---|---|
| 1 mL2 mg/mL | 5 u | 12.5 u | 25 u | 50 u |
| 2 mL1 mg/mL | 10 u | 25 u | 50 u | 100 u |
| 3 mL0.67 mg/mL | 15 u | 37.5 u | 75 u | 1.5 mL |
5 mg vial
| Water | 100 mcg | 250 mcg | 500 mcg | 1 mg |
|---|---|---|---|---|
| 1 mL5 mg/mL | 2 u | 5 u | 10 u | 20 u |
| 2 mL2.5 mg/mL | 4 u | 10 u | 20 u | 40 u |
| 3 mL1.67 mg/mL | 6 u | 15 u | 30 u | 60 u |
10 mg vial
| Water | 100 mcg | 250 mcg | 500 mcg | 1 mg |
|---|---|---|---|---|
| 1 mL10 mg/mL | 1 u | 2.5 u | 5 u | 10 u |
| 2 mL5 mg/mL | 2 u | 5 u | 10 u | 20 u |
| 3 mL3.33 mg/mL | 3 u | 7.5 u | 15 u | 30 u |
"u" = units on a U-100 syringe. A value in mL means the dose is more than a 1 mL syringe holds. Arithmetic only - not a dose recommendation.
Keep in mind
- Keep a mixed vial in the fridge at 2-8°C (36-46°F), not the freezer.
- CDC guidance: date an opened multi-dose vial and discard it within 28 days unless the manufacturer states otherwise.
- Use a new sterile needle and syringe every time you enter the vial.
Sources and the full steps: how to reconstitute peptides andpeptide storage and shelf life.