Skip to content

15 mg vial + 5 mL bacteriostatic water: units chart

A 15 mg vial mixed with 5 mL of bacteriostatic water holds 3,000 mcg per mL. This is a middle-strength mix: each unit holds 30 mcg, so most doses in the table land between 2 and 100 units on a 1 mL syringe.

Calculate
Vial unit

= 15,000 mcg

mL
Dose unit

= 250 mcg

Syringe type
Syringe size

Units to draw

8.3units

Draw 8.3 units on a U-100 syringe, just above the 8-unit mark.

Syringe filled to 8.3 unitsU-100, 1 mL syringe holding up to 100 units. Draw 8.3 units on a U-100 syringe, just above the 8-unit mark.01020304050607080901008.3
Dose
250 mcg (0.25 mg)
Volume
0.083 mL
Concentration
3,000 mcg/mL (3 mg/mL)
Per unit
30 mcg (0.03 mg)
Full doses in vial
60
Show the math
  1. Convert the vial amount to mcgmg × 1,000 = mcg15 mg × 1,000 = 15,000 mcg
  2. Convert the dose to mcgmg × 1,000 = mcg0.25 mg × 1,000 = 250 mcg
  3. Concentrationvial (mcg) ÷ water (mL) = mcg per mL15,000 mcg ÷ 5 mL = 3,000 mcg/mL (3 mg/mL)
  4. Volume to drawdose (mcg) ÷ concentration (mcg/mL) = mL250 mcg ÷ 3,000 mcg/mL = 0.0833 mL
  5. Units to drawmL × units per mL = units0.0833 mL × 100 units/mL = 8.3 units
  6. Amount in each unitmcg per mL ÷ units per mL = mcg per unit3,000 mcg/mL ÷ 100 units/mL = 30 mcg per unit (0.03 mg)
  7. Doses in the vialvial (mcg) ÷ dose (mcg), rounded down15,000 mcg ÷ 250 mcg = 60 full doses

Saved calculations

No saved calculations yet. Save one from the results.

15 mg peptide with 5 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 to units: 15 mg vial with 5 mL of water
DoseUnits (U-100)Volume (mL)
50 mcg1.7hard to measure0.0167
100 mcg3.30.0333
150 mcg50.05
200 mcg6.70.0667
250 mcg8.30.0833
300 mcg100.1
400 mcg13.30.1333
500 mcg16.70.1667
600 mcg200.2
750 mcg250.25
1,000 mcg1 mg33.30.3333
1,250 mcg1.25 mg41.70.4167
1,500 mcg1.5 mg500.5
2,000 mcg2 mg66.70.6667

Key numbers for this mix

Peptide in the vial
15,000 mcg
Concentration
3,000 mcg/mL
Each unit on a U-100 syringe
30 mcg
Each unit on a U-40 syringe
75 mcg
Smallest easy-to-measure dose (2 units)
60 mcg
Most that fits in a 1 mL syringe
3,000 mcg

Worked example: 300 mcg

  1. Convert the vial amount to mcg: 15 mg × 1,000 = 15,000 mcg
  2. Concentration: 15,000 mcg ÷ 5 mL = 3,000 mcg/mL (3 mg/mL)
  3. Volume to draw: 300 mcg ÷ 3,000 mcg/mL = 0.1 mL
  4. Units to draw: 0.1 mL × 100 units/mL = 10 units
  5. Amount in each unit: 3,000 mcg/mL ÷ 100 units/mL = 30 mcg per unit (0.03 mg)
  6. Doses in the vial: 15,000 mcg ÷ 300 mcg = 50 full doses

Draw to the 10-unit mark on a U-100 syringe. The same 300 mcg dose is 6 units with 3 mL of water, compared with 10 units with 5 mL.

Syringe filled to 10 unitsA 1 mL U-100 insulin syringe filled to 10 units for 300 mcg.010203040506070809010010

Frequently asked questions

What is the concentration of a 15 mg vial with 5 mL of water?

A 15 mg vial mixed with 5 mL of water holds 3,000 mcg per mL. Each unit on a U-100 syringe holds 30 mcg.

How many units is 300 mcg with a 15 mg vial and 5 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 15 mg vial and 5 mL of water?

About 60 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 15 mg vial and 5 mL of water?

3,000 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 15 mg vial with 5 mL of water give?

Divide 15,000 mcg by your dose and round down: 50 full doses of 300 mcg, or 37 of 400 mcg.

Nearby vial and water combinations

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.