12 mg vial + 3 mL bacteriostatic water: units chart
A 12 mg vial mixed with 3 mL of bacteriostatic water holds 4,000 mcg per mL. This is a middle-strength mix: each unit holds 40 mcg, so most doses in the table land between 2 and 100 units on a 1 mL syringe.
Units to draw
6.3units
Draw 6.3 units on a U-100 syringe, just above the 6-unit mark.
- Dose
- 250 mcg (0.25 mg)
- Volume
- 0.063 mL
- Concentration
- 4,000 mcg/mL (4 mg/mL)
- Per unit
- 40 mcg (0.04 mg)
- Full doses in vial
- 48
Show the math
- Convert the vial amount to mcgmg × 1,000 = mcg12 mg × 1,000 = 12,000 mcg
- Convert the dose to mcgmg × 1,000 = mcg0.25 mg × 1,000 = 250 mcg
- Concentrationvial (mcg) ÷ water (mL) = mcg per mL12,000 mcg ÷ 3 mL = 4,000 mcg/mL (4 mg/mL)
- Volume to drawdose (mcg) ÷ concentration (mcg/mL) = mL250 mcg ÷ 4,000 mcg/mL = 0.0625 mL
- Units to drawmL × units per mL = units0.0625 mL × 100 units/mL = 6.3 units
- Amount in each unitmcg per mL ÷ units per mL = mcg per unit4,000 mcg/mL ÷ 100 units/mL = 40 mcg per unit (0.04 mg)
- Doses in the vialvial (mcg) ÷ dose (mcg), rounded down12,000 mcg ÷ 250 mcg = 48 full doses
12 mg peptide with 3 mL bac water: units chart
Units to draw on a 1 mL U-100 syringe for common doses, calculated by this site. With this mix, the chart doses from 100 mcg to 2,000 mcg are easy to read and fit one 1 mL syringe. The smallest dose is under 2 units.
| Dose | Units (U-100) | Volume (mL) |
|---|---|---|
| 50 mcg | 1.3hard to measure | 0.0125 |
| 100 mcg | 2.5 | 0.025 |
| 150 mcg | 3.8 | 0.0375 |
| 200 mcg | 5 | 0.05 |
| 250 mcg | 6.3 | 0.0625 |
| 300 mcg | 7.5 | 0.075 |
| 400 mcg | 10 | 0.1 |
| 500 mcg | 12.5 | 0.125 |
| 600 mcg | 15 | 0.15 |
| 750 mcg | 18.8 | 0.1875 |
| 1,000 mcg1 mg | 25 | 0.25 |
| 1,250 mcg1.25 mg | 31.3 | 0.3125 |
| 1,500 mcg1.5 mg | 37.5 | 0.375 |
| 2,000 mcg2 mg | 50 | 0.5 |
Key numbers for this mix
- Peptide in the vial
- 12,000 mcg
- Concentration
- 4,000 mcg/mL
- Each unit on a U-100 syringe
- 40 mcg
- Each unit on a U-40 syringe
- 100 mcg
- Smallest easy-to-measure dose (2 units)
- 80 mcg
- Most that fits in a 1 mL syringe
- 4,000 mcg
Worked example: 400 mcg
- Convert the vial amount to mcg: 12 mg × 1,000 = 12,000 mcg
- Concentration: 12,000 mcg ÷ 3 mL = 4,000 mcg/mL (4 mg/mL)
- Volume to draw: 400 mcg ÷ 4,000 mcg/mL = 0.1 mL
- Units to draw: 0.1 mL × 100 units/mL = 10 units
- Amount in each unit: 4,000 mcg/mL ÷ 100 units/mL = 40 mcg per unit (0.04 mg)
- Doses in the vial: 12,000 mcg ÷ 400 mcg = 30 full doses
Draw to the 10-unit mark on a U-100 syringe. The same 400 mcg dose is 8.3 units with 2.5 mL of water and 16.7 units with 5 mL of water, compared with 10 units with 3 mL.
Frequently asked questions
What is the concentration of a 12 mg vial with 3 mL of water?
A 12 mg vial mixed with 3 mL of water holds 4,000 mcg per mL. Each unit on a U-100 syringe holds 40 mcg.
How many units is 400 mcg with a 12 mg vial and 3 mL of water?
It is 10 units on a U-100 syringe, which is 0.1 mL of the mixed liquid.
What is the smallest dose you can measure well with a 12 mg vial and 3 mL of water?
About 80 mcg, which fills 2 units on a U-100 syringe. Smaller amounts are hard to read; a vial mixed with more water spreads them over more units.
What is the largest dose that fits a 1 mL syringe with a 12 mg vial and 3 mL of water?
4,000 mcg, which fills all 100 units of a 1 mL U-100 syringe. Larger doses need more than one draw or a stronger mix.
How many doses does a 12 mg vial with 3 mL of water give?
Divide 12,000 mcg by your dose and round down: 30 full doses of 400 mcg, or 24 of 500 mcg.
Nearby vial and water combinations
- Less water: 12 mg + 2.5 mL
- More water: 12 mg + 5 mL
- Smaller vial: 10 mg + 3 mL
- Larger vial: 15 mg + 3 mL
See all reconstitution charts, or use the peptide calculator for any other vial, water or dose. For the reasoning behind these numbers, read Peptide Reconstitution Formula, Explained Step by Step.