50 mg vial + 1 mL bacteriostatic water
A 50 mg vial reconstituted with 1 mL comes to 50 mg/mL. Every unit on a U-100 insulin syringe then carries 500 mcg, so 5 mg is 10 units (0.1 mL) and the vial holds 10 draws of that size.
Units for each amount
| Dose | mL | U-100 units | U-40 units | Doses per vial |
|---|---|---|---|---|
| 50 mcg | 0.001 | 0.1 | 0.04 | 1000 |
| 100 mcg | 0.002 | 0.2 | 0.08 | 500 |
| 150 mcg | 0.003 | 0.3 | 0.12 | 333 |
| 200 mcg | 0.004 | 0.4 | 0.16 | 250 |
| 250 mcg | 0.005 | 0.5 | 0.2 | 200 |
| 300 mcg | 0.006 | 0.6 | 0.24 | 166 |
| 400 mcg | 0.008 | 0.8 | 0.32 | 125 |
| 500 mcg | 0.01 | 1 | 0.4 | 100 |
| 750 mcg | 0.015 | 1.5 | 0.6 | 66 |
| 1 mg | 0.02 | 2 | 0.8 | 50 |
| 1.5 mg | 0.03 | 3 | 1.2 | 33 |
| 2 mg | 0.04 | 4 | 1.6 | 25 |
| 2.5 mg | 0.05 | 5 | 2 | 20 |
| 5 mg | 0.1 | 10 | 4 | 10 |
| 10 mg | 0.2 | 20 | 8 | 5 |
Same vial, other volumes
The mass does not move. Only the concentration and the unit count do.
| Water | mg/mL | mcg per unit | 5 mg = | |
|---|---|---|---|---|
| 1 mL | 50 | 500 | 10 units | |
| 1.5 mL | 33.333 | 333.33 | 15 units | table → |
| 2 mL | 25 | 250 | 20 units | table → |
| 2.5 mL | 20 | 200 | 25 units | table → |
| 3 mL | 16.667 | 166.67 | 30 units | table → |
| 5 mL | 10 | 100 | 50 units | table → |
Try other numbers
50 mg + 1 mL questions
What concentration is 50 mg in 1 mL?
50 mg divided by 1 mL is 50 mg/mL, which is 50,000 mcg/mL. On a U-100 syringe each unit holds 0.01 mL, so one unit carries 500 mcg.
How many units is 5 mg from a 50 mg vial with 1 mL?
5000 mcg divided by 50,000 mcg/mL is 0.1 mL, which is 10 units on a U-100 syringe and 4 units on a U-40 syringe. The vial holds 10 draws of that size.
What if I add 1.5 mL instead of 1 mL to the 50 mg vial?
The mass stays 50 mg. With 1.5 mL the concentration is 33.333 mg/mL instead of 50 mg/mL, so the same amount per draw needs more units: 5 mg becomes 15 units instead of 10.
Does a 50 mg vial hold 1 mL?
Usually. Most lyophilized peptide vials are 2 mL or 3 mL glass, and 1 mL fits with room to swirl. Check the vial if it is an unusually small format.
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