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5 mg vial + 1.5 mL bacteriostatic water: units chart

A 5 mg vial mixed with 1.5 mL of bacteriostatic water holds 3,333.33 mcg per mL. This is a middle-strength mix: each unit holds 33.33 mcg, so most doses in the table land between 2 and 100 units on a 1 mL syringe.

Calculate
Vial unit

= 5,000 mcg

mL
Dose unit

= 250 mcg

Syringe type
Syringe size

Units to draw

7.5units

Draw 7.5 units on a U-100 syringe, just below the 8-unit mark.

Syringe filled to 7.5 unitsU-100, 1 mL syringe holding up to 100 units. Draw 7.5 units on a U-100 syringe, just below the 8-unit mark.01020304050607080901007.5
Dose
250 mcg (0.25 mg)
Volume
0.075 mL
Concentration
3,333.33 mcg/mL (3.33333 mg/mL)
Per unit
33.33 mcg (0.03333 mg)
Full doses in vial
20
Show the math
  1. Convert the vial amount to mcgmg × 1,000 = mcg5 mg × 1,000 = 5,000 mcg
  2. Convert the dose to mcgmg × 1,000 = mcg0.25 mg × 1,000 = 250 mcg
  3. Concentrationvial (mcg) ÷ water (mL) = mcg per mL5,000 mcg ÷ 1.5 mL = 3,333.33 mcg/mL (3.33333 mg/mL)
  4. Volume to drawdose (mcg) ÷ concentration (mcg/mL) = mL250 mcg ÷ 3,333.33 mcg/mL = 0.075 mL
  5. Units to drawmL × units per mL = units0.075 mL × 100 units/mL = 7.5 units
  6. Amount in each unitmcg per mL ÷ units per mL = mcg per unit3,333.33 mcg/mL ÷ 100 units/mL = 33.33 mcg per unit (0.03333 mg)
  7. Doses in the vialvial (mcg) ÷ dose (mcg), rounded down5,000 mcg ÷ 250 mcg = 20 full doses

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5 mg peptide with 1.5 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: 5 mg vial with 1.5 mL of water
DoseUnits (U-100)Volume (mL)
50 mcg1.5hard to measure0.015
100 mcg30.03
150 mcg4.50.045
200 mcg60.06
250 mcg7.50.075
300 mcg90.09
400 mcg120.12
500 mcg150.15
600 mcg180.18
750 mcg22.50.225
1,000 mcg1 mg300.3
1,250 mcg1.25 mg37.50.375
1,500 mcg1.5 mg450.45
2,000 mcg2 mg600.6

Key numbers for this mix

Peptide in the vial
5,000 mcg
Concentration
3,333.33 mcg/mL
Each unit on a U-100 syringe
33.33 mcg
Each unit on a U-40 syringe
83.33 mcg
Smallest easy-to-measure dose (2 units)
66.67 mcg
Most that fits in a 1 mL syringe
3,333.33 mcg

Worked example: 300 mcg

  1. Convert the vial amount to mcg: 5 mg × 1,000 = 5,000 mcg
  2. Concentration: 5,000 mcg ÷ 1.5 mL = 3,333.33 mcg/mL (3.33333 mg/mL)
  3. Volume to draw: 300 mcg ÷ 3,333.33 mcg/mL = 0.09 mL
  4. Units to draw: 0.09 mL × 100 units/mL = 9 units
  5. Amount in each unit: 3,333.33 mcg/mL ÷ 100 units/mL = 33.33 mcg per unit (0.03333 mg)
  6. Doses in the vial: 5,000 mcg ÷ 300 mcg = 16 full doses

Draw 9 units on a U-100 syringe, halfway between the 8- and 10-unit marks. The same 300 mcg dose is 6 units with 1 mL of water and 12 units with 2 mL of water, compared with 9 units with 1.5 mL.

Syringe filled to 9 unitsA 1 mL U-100 insulin syringe filled to 9 units for 300 mcg.01020304050607080901009

Frequently asked questions

What is the concentration of a 5 mg vial with 1.5 mL of water?

A 5 mg vial mixed with 1.5 mL of water holds 3,333.33 mcg per mL. Each unit on a U-100 syringe holds 33.33 mcg.

How many units is 300 mcg with a 5 mg vial and 1.5 mL of water?

It is 9 units on a U-100 syringe, which is 0.09 mL of the mixed liquid.

What is the smallest dose you can measure well with a 5 mg vial and 1.5 mL of water?

About 66.67 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 5 mg vial and 1.5 mL of water?

3,333.33 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 5 mg vial with 1.5 mL of water give?

Divide 5,000 mcg by your dose and round down: 16 full doses of 300 mcg, or 12 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.