Sermorelin 10 mg reconstitution calculator
How much bac water for sermorelin 10 mg?
There’s no single right amount: the water sets the strength, not how much sermorelin is in the vial, so use the volume on your pharmacy’s instructions. For example, 1 mL makes 10 mg/mL and 2 mL makes 5 mg/mL; the table below shows what each volume means on a U-100 syringe.
Your sermorelin vial
Syringe
1 mL · 2-unit marks
Work backwards
Find the water for a given reading in units.
Enter your numbers to see the result.
Enter your numbers
This is arithmetic, not medical advice. Confirm with your prescriber or pharmacist.
How our calculator worksAdvanced
Vial capacityOptional
The volume printed on the vial or its box, not the mg. We’ll tell you if the water won’t fit.
What each volume makes
| Water | Strength | Each unit | 1 mg is |
|---|---|---|---|
| 1 mL | 10 mg/mL | 100 mcg | 10 units |
| 2 mL | 5 mg/mL | 50 mcg | 20 units |
| 2.5 mL | 4 mg/mL | 40 mcg | 25 units |
Examples; use the volume on your pharmacy’s instructions. Units are on a U-100 syringe: 100 units = 1 mL.
About the 10 mg vial
Twice the 5 mg vial at the same water
With 2 mL of water this vial is 5 mg/mL, so each unit holds 50 mcg. The 5 mg vial with the same 2 mL is 2.5 mg/mL, 25 mcg per unit. The same syringe reading holds twice as much here, so units worked out for one vial size are wrong for the other. Matching strengths takes twice the water: 10 mg in 2 mL and 5 mg in 1 mL are both 5 mg/mL. Recalculate whenever the vial size or the water changes.
At 1 mL, every unit is 100 mcg
The less water, the more each line on the syringe is worth. With 1 mL this vial is 10 mg/mL, so one unit (0.01 mL) holds 100 mcg; with 2.5 mL it’s 4 mg/mL and one unit holds 40 mcg. Misreading the plunger by a single unit moves 100 mcg in the stronger mix and 40 mcg in the weaker one. On most 100-unit syringes each small line is 2 units, so one line at 1 mL is 200 mcg (how to read an insulin syringe). Use the water volume on your pharmacy’s label, not the one that looks easiest.
Ten to twenty Geref vials, so check the date
Geref, the last FDA-approved sermorelin, came as 0.5 mg and 1.0 mg vials (Federal Register). A 10 mg vial holds 10 times the larger and 20 times the smaller, and on the same instructions it takes twice as many draws as a 5 mg vial, so it stays in use twice as long. Geref’s approvals were withdrawn effective June 18, 2009, and no current FDA label says how long mixed sermorelin keeps. Go by the beyond-use date on your pharmacy’s label, count your draws against it before you mix, and see how long reconstituted peptides last.
Sources for these notes
About sermorelin
US regulatory status
Approved product discontinued
No FDA-approved sermorelin product is marketed in the US. Geref (EMD Serono) was discontinued in 2008 and its approvals were withdrawn effective June 18, 2009; in 2013 the FDA determined it was not withdrawn for safety or effectiveness reasons. Sermorelin acetate is under evaluation (category 1) for outsourcing-facility compounding, which is not FDA approval, and WADA prohibits it at all times.
As of
Sources (4)
- Determination That GEREF (Sermorelin Acetate) Injection, 0.5 Milligrams Base/Vial and 1.0 Milligrams Base/Vial, and GEREF (Sermorelin Acetate) Injection, 0.05 Milligrams Base/Amp, Were Not Withdrawn From Sale for Reasons of Safety or EffectivenessFederal Register (U.S. Food and Drug Administration), 2013 (opens in a new tab)
- Bulk Drug Substances Nominated for Use in Compounding Under Section 503B of the Federal Food, Drug, and Cosmetic ActU.S. Food and Drug Administration, 2025 (opens in a new tab)
- Bulk Drug Substances Used in Compounding Under Section 503B of the FD&C ActU.S. Food and Drug Administration, 2025 (opens in a new tab)
- World Anti-Doping Code International Standard: Prohibited List 2026World Anti-Doping Agency, 2026 (opens in a new tab)
How this sermorelin calculator works
This calculator starts from the 10 mg in your vial. Add the water you mix it with and the dose your prescriber gave you; it divides the mg by the mL to get the strength, then turns your dose into mL and units on a 30, 50 or 100-unit syringe.
Peptinote never suggests a dose or a water volume. The example volumes are there to make the math easy to check, not as advice. For the full method, see the peptide calculator.
Questions people ask
How much bacteriostatic water to mix with 10 mg of sermorelin?
There’s no single right amount: use the volume on your pharmacy’s instructions. The water only sets the strength; the vial still holds 10 mg however much you add. With 1 mL it’s 10 mg/mL (100 mcg per unit), with 2 mL 5 mg/mL (50 mcg per unit) and with 2.5 mL 4 mg/mL (40 mcg per unit). Enter your volume and prescribed dose above to get the units.
How do I reconstitute sermorelin 10 mg?
Wipe both stoppers with alcohol and let them dry. Draw the volume of bacteriostatic water your pharmacy specifies into a new syringe, add it slowly down the inside of the vial, then swirl gently until clear; don’t shake. Label it with the strength: 10 mg in 1 mL is 10 mg/mL. Full steps: how to reconstitute peptides.
Can Peptinote tell me how many units to take?
No. Peptinote never suggests a dose. Enter the dose your prescriber gave you, and the calculator shows how to measure it: the units, the mL and where the line sits on your syringe, with every step of the math. If you aren’t sure what your dose is, ask your prescriber or pharmacist before drawing anything. How our calculator works.
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Every result is plain arithmetic from formulas we publish in full and check with automated tests. Peptinote doesn’t suggest doses and never sells or links to sellers of peptides.