50 mg vial + 2.5 mL bacteriostatic water
A 50 mg vial reconstituted with 2.5 mL comes to 20 mg/mL. Every unit on a U-100 insulin syringe then carries 200 mcg, so 5 mg is 25 units (0.25 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 | 0.0025 | 0.25 | 0.1 | 1000 |
| 100 mcg | 0.005 | 0.5 | 0.2 | 500 |
| 150 mcg | 0.0075 | 0.75 | 0.3 | 333 |
| 200 mcg | 0.01 | 1 | 0.4 | 250 |
| 250 mcg | 0.013 | 1.3 | 0.5 | 200 |
| 300 mcg | 0.015 | 1.5 | 0.6 | 166 |
| 400 mcg | 0.02 | 2 | 0.8 | 125 |
| 500 mcg | 0.025 | 2.5 | 1 | 100 |
| 750 mcg | 0.038 | 3.8 | 1.5 | 66 |
| 1 mg | 0.05 | 5 | 2 | 50 |
| 1.5 mg | 0.075 | 7.5 | 3 | 33 |
| 2 mg | 0.1 | 10 | 4 | 25 |
| 2.5 mg | 0.13 | 12.5 | 5 | 20 |
| 5 mg | 0.25 | 25 | 10 | 10 |
| 10 mg | 0.5 | 50 | 20 | 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 | table → |
| 1.5 mL | 33.333 | 333.33 | 15 units | table → |
| 2 mL | 25 | 250 | 20 units | table → |
| 2.5 mL | 20 | 200 | 25 units | |
| 3 mL | 16.667 | 166.67 | 30 units | table → |
| 5 mL | 10 | 100 | 50 units | table → |
Same concentration, different vial
These pairs also come to 20 mg/mL, so their unit counts match this page exactly; only the number of draws per vial differs: 10 mg + 0.5 mL, 20 mg + 1 mL, 30 mg + 1.5 mL, 60 mg + 3 mL.
Try other numbers
50 mg + 2.5 mL questions
What concentration is 50 mg in 2.5 mL?
50 mg divided by 2.5 mL is 20 mg/mL, which is 20,000 mcg/mL. On a U-100 syringe each unit holds 0.01 mL, so one unit carries 200 mcg.
How many units is 5 mg from a 50 mg vial with 2.5 mL?
5000 mcg divided by 20,000 mcg/mL is 0.25 mL, which is 25 units on a U-100 syringe and 10 units on a U-40 syringe. The vial holds 10 draws of that size.
What if I add 3 mL instead of 2.5 mL to the 50 mg vial?
The mass stays 50 mg. With 3 mL the concentration is 16.667 mg/mL instead of 20 mg/mL, so the same amount per draw needs more units: 5 mg becomes 30 units instead of 25.
Does a 50 mg vial hold 2.5 mL?
Usually. Most lyophilized peptide vials are 2 mL or 3 mL glass, and 2.5 mL fits with room to swirl. Check the vial if it is an unusually small format.
Brands we recommend. We are independent and have no affiliation with any brand: no affiliate links, no referral codes, no paid placements. These are the suppliers whose testing and certificates hold up when we check them.
- Licensed Peptides two accredited labs on every lot, certificates public, card and Apple Pay checkout
- Core Peptides long track record, public certificates, wide catalog
- Ascension Peptides public third-party testing, clear pricing