How many units is each Sermorelin amount?
At 5 mg + 2 mL (2.5 mg/mL) on a U-100 syringe:
Generated from the calculator's own functions. Rows are evenly spaced reference amounts, not suggested amounts. Amber readings don't fit a 100-unit barrel.
| Amount | mg | Volume (mL) | Syringe units |
|---|---|---|---|
| 100 mcg | 0.1 | 0.04 | 4 |
| 200 mcg | 0.2 | 0.08 | 8 |
| 250 mcg | 0.25 | 0.1 | 10 |
| 300 mcg | 0.3 | 0.12 | 12 |
| 400 mcg | 0.4 | 0.16 | 16 |
| 500 mcg | 0.5 | 0.2 | 20 |
| 750 mcg | 0.75 | 0.3 | 30 |
| 1,000 mcg | 1 | 0.4 | 40 |
.png){kind=link}
How much water for each Sermorelin vial size?
Sermorelin is sold in 2 common sizes (5 mg, 10 mg). The same water volume gives a different concentration in each, so the same reading means a different amount. Each cell shows mcg per unit with mg/mL in brackets.
| Vial | 1 mL | 2 mL | 2.5 mL | 3 mL |
|---|---|---|---|---|
| 5 mg | 50 (5) | 25 (2.5) | 20 (2) | 16.67 (1.67) |
| 10 mg | 100 (10) | 50 (5) | 40 (4) | 33.33 (3.33) |
How much bacteriostatic water for a 5 mg Sermorelin vial?
1 mL → 5 mg/mL, so 200 mcg is 4 units. 2 mL → 2.5 mg/mL, so 200 mcg is 8 units. 2.5 mL → 2 mg/mL, so 200 mcg is 10 units. The whole vial holds 25 draws of 200 mcg.
How much bacteriostatic water for a 10 mg Sermorelin vial?
1 mL → 10 mg/mL, so 200 mcg is 2 units. 2 mL → 5 mg/mL, so 200 mcg is 4 units. 2.5 mL → 4 mg/mL, so 200 mcg is 5 units. The whole vial holds 50 draws of 200 mcg.
Worked example: 5 mg vial, 2 mL, 200 mcg
- Concentration. 5 mg ÷ 2 mL = 2.5 mg/mL (2,500 mcg/mL).
- Volume. 0.2 mg ÷ 2.5 mg/mL = 0.08 mL.
- Units. 0.08 mL × 100 = 8 units on a U-100 syringe.
- Check. One unit holds 25 mcg; 8 × 25 mcg = 200 mcg = 0.2 mg, which matches. The vial holds 25 draws of this size.
Sermorelin: notes for the arithmetic
Sermorelin amounts are usually written in mcg. Check whether a figure you are working from is in mcg or mg before entering it. A 1,000× error is the most common mistake with this kind of conversion.
For the lab procedure itself (materials, aseptic technique, mixing without foaming) see how to reconstitute peptides. For what bacteriostatic water is and how long an opened vial is kept, see the bacteriostatic water guide and the storage guide.
Frequently asked questions
How many units is 200 mcg of Sermorelin?
It depends on the water volume. 5 mg + 2 mL = 2.5 mg/mL, so 200 mcg is 0.08 mL, or 8 units on a U-100 syringe. With 1 mL instead it would be 4 units.
How much bacteriostatic water for a 5 mg Sermorelin vial?
There is no single correct volume. 1 mL gives 5 mg/mL (50 mcg per unit); 2 mL gives 2.5 mg/mL (25 mcg per unit); 2.5 mL gives 2 mg/mL (20 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How much bacteriostatic water for a 10 mg Sermorelin vial?
There is no single correct volume. 1 mL gives 10 mg/mL (100 mcg per unit); 2 mL gives 5 mg/mL (50 mcg per unit); 2.5 mL gives 4 mg/mL (40 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How many mg of Sermorelin is 10 units?
10 units on a U-100 syringe is 0.1 mL. At 2.5 mg/mL (5 mg in 2 mL) that is 0.25 mg (250 mcg). At a different concentration the answer is different.
Is this a Sermorelin dosing calculator?
It is an arithmetic tool. It converts an amount you enter into a volume and a syringe reading; it does not suggest amounts, schedules or uses. A sermorelin product (Geref) was previously FDA-approved and has been discontinued. Research-labeled vials are not an approved product.
Sources
Links checked 2026-10-19.