How to find your dose

Read this first

These are reference tools for education only — not medical advice, and not dosing instructions. The concentration of a reconstituted vial depends entirely on how much peptide and how much water you used, so every number below is an example built on a stated mixing ratio. The Peptide University does not sell peptides or supplies. Always confirm concentrations and any dose with a qualified clinician or pharmacist.

Reconstituting is just adding bacteriostatic (BAC) water to a freeze-dried peptide vial. The concentration you end up with is the amount of peptide divided by the water you added. Two common beginner setups both land at the same concentration:

5 mg vial + 1 mL BAC water = 5 mg per mL
10 mg vial + 2 mL BAC water = 5 mg per mL

Because both are 5 mg/mL, the same units-to-dose table works for either — on a U-100 insulin syringe where 100 units = 1 mL:

Units → dose at 5 mg/mL (U-100 insulin syringe)
Units drawn	Dose
10	0.5 mg
20	1 mg
30	1.5 mg
40	2 mg
50	2.5 mg
60	3 mg
70	3.5 mg
80	4 mg
90	4.5 mg
100	5 mg

Mix

Add BAC water gently down the side of the peptide vial; swirl, don't shake.

Draw

Pull to the unit line for the dose you want from the table.

Double-check

Measure twice, then label the vial with the date and concentration.

Inject

Only as directed by a qualified clinician — this page can't replace one.

Download the printable chart

1 mg to 10 mg reference chart

How many units a given dose in mg works out to depends on your mixing ratio. On a U-100 insulin syringe, 100 units = 1 mL. Find your mixing ratio across the top, your dose down the side, and read the units in the cell:

Units per dose, by mixing ratio (U-100 syringe)
mg (total)	10 mg / 1 mL 10 mg/mL · 10 u/mg	20 mg / 2 mL 10 mg/mL · 10 u/mg	30 mg / 3 mL 10 mg/mL · 10 u/mg	40 mg / 2 mL 20 mg/mL · 5 u/mg	50 mg / 2 mL 25 mg/mL · 4 u/mg	60 mg / 3 mL 20 mg/mL · 5 u/mg	100 mg / 2 mL 50 mg/mL · 2 u/mg
1 mg	10	10	10	5	4	5	2
2 mg	20	20	20	10	8	10	4
3 mg	30	30	30	15	12	15	6
4 mg	40	40	40	20	16	20	8
5 mg	50	50	50	25	20	25	10
6 mg	60	60	60	30	24	30	12
7 mg	70	70	70	35	28	35	14
8 mg	80	80	80	40	32	40	16
9 mg	90	90	90	45	36	45	18
10 mg	100	100	100	50	40	50	20
units / 1 mg	10	10	10	5	4	5	2

Worked example

Mixed 40 mg in 2 mL (20 mg/mL) = 5 units per mg. Want a 3 mg dose? 3 mg × 5 = 15 units.

Download the printable chart

Peptide conversion chart

The whole conversion is mg → mL → units, and the key formula is:

units = mL × 100

because a 1 mL insulin syringe holds 100 units.

How to convert mg to mL (and units)

Concentration = total mg ÷ total mL
mL needed = dose in mg ÷ concentration
Units = mL × 100

mL → units on a U-100 syringe
mL drawn	Units
0.05 mL	5 units
0.10 mL	10 units
0.15 mL	15 units
0.20 mL	20 units
0.25 mL	25 units
0.30 mL	30 units
0.40 mL	40 units
0.50 mL	50 units
0.75 mL	75 units
1.00 mL	100 units

Example

30 mg vial + 3 mL BAC water = 10 mg per mL. At that concentration:

Example dose table — 30 mg in 3 mL (10 mg/mL)
Dose	mL needed	Units (U-100)
2.5 mg	0.25 mL	25 units
5 mg	0.50 mL	50 units
7.5 mg	0.75 mL	75 units
10 mg	1.00 mL	100 units
15 mg	1.50 mL	150 units

Always confirm the concentration for how your vial was mixed — the numbers change entirely with a different ratio.

Download the printable chart

Reference & educational purposes only · not medical advice · we don't sell peptides or supplies.