Common vial sizes and water amounts
| Vial | Water | What that gives you |
|---|---|---|
| 2 mg | 1 mL | 2 mg/mL; 200 mcg = 10U |
| 2 mg | 2 mL | 1 mg/mL; 200 mcg = 20U |
| 5 mg | 2 mL | 2.5 mg/mL; 200 mcg = 8U |
| 5 mg | 2.5 mL | 2 mg/mL; 200 mcg = 10U |
Worked examples
Concentration 2 mg/mL → 20 mcg per unit → draw 10 units (0.1 mL) on a 30U syringe. That vial holds about 10 such draws.
Concentration 2 mg/mL → 20 mcg per unit → draw 10 units (0.1 mL) on a 30U syringe. That vial holds about 25 such draws.
Concentration 2.5 mg/mL → 25 mcg per unit → draw 12 units (0.12 mL) on a 30U syringe. That vial holds about 16.7 such draws.
Notes for this calculator
A 2 mg vial in 1 mL gives a clean 20 mcg per unit, so every 100 mcg is 5 units. A 5 mg vial in 2.5 mL gives the same concentration, which keeps the draw identical when you change vial sizes.
A 2 mg vial holds only 10 draws at 200 mcg, so doses per vial is worth watching here; the calculator shows it next to the result.
Vials for this calculator: see what ThePeptideStore carries. Supplies around the vial are in the kit above.
Common questions
How many units is 200 mcg of sermorelin?
10 units at 2 mg/mL (2 mg in 1 mL or 5 mg in 2.5 mL). 20 units at 1 mg/mL. Enter your own vial and water above.
How much water for a 2 mg sermorelin vial?
1 mL gives 2 mg/mL and a 200 mcg entry at 10 units. 2 mL gives 1 mg/mL and 20 units.
How many draws are in a 5 mg vial?
5,000 mcg divided by your entry: 200 mcg gives 25 draws, 300 mcg gives about 16.
Does the calculator recommend a dose?
No. You enter the dose your protocol calls for and it converts that into syringe units, mL, and doses per vial. It never suggests what to take.
Why is my draw too big for the syringe?
The concentration is low for that dose. Either use a larger U-100 syringe or mix the next vial with less water. The calculator shows the exact water amount that would fit your syringe.