Sermorelin reconstitution calculator
Work out the concentration of a reconstituted Sermorelin vial and the volume that contains a given amount — or work backwards from a target concentration to the diluent volume to add. The vial presets below are the strengths Frontier Peptide Labs supplies for this compound. Research use only.
Sermorelin vial strengths supplied by Frontier Peptide Labs: 5 mg, 10 mg. Enter any other value in the field if your vial differs.
Research use only. This tool performs laboratory dilution arithmetic (mass ÷ volume). It does not select, recommend, or calculate an amount for administration.
Mass per volume at this concentration
| Volume drawn | Contains |
|---|
Note: adding more diluent does not change how much Sermorelin is in the vial. It lowers the concentration, so the volume transferred for the same amount goes up proportionally.
Sermorelin reconstitution, worked through
A 5 mg Sermorelin vial reconstituted with 2 mL of bacteriostatic water gives a concentration of 2.5 mg/mL, which is 2500 mcg/mL. To transfer 250 mcg from that solution: 250 ÷ 2500 = 0.1 mL. One 5 mg vial divided into 250 mcg portions yields approximately 20 aliquots, and that aliquot count does not change with the diluent volume.
Concentration by Sermorelin vial strength
The concentration each supplied strength reaches at three common diluent volumes.
| Vial strength | + 1 mL | + 2 mL | + 3 mL |
|---|---|---|---|
| 5 mg | 5 mg/mL | 2.5 mg/mL | 1.667 mg/mL |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.333 mg/mL |
How the math works
Step 1 — find the concentration. Divide the vial contents in milligrams by the diluent volume in millilitres. That gives milligrams per millilitre; multiply by 1,000 to express it as micrograms per millilitre.
Step 2 — find the volume to transfer. Divide the target amount by the concentration, using matching units. The result is the volume, in millilitres, containing that amount of peptide.
Step 3 — or work backwards. If you already know the working concentration you want, divide the vial contents by that concentration instead. The result is the diluent volume to add. Use the Diluent volume needed tab for this direction; it is the more useful one when several vials of different strengths have to share a single working concentration.
Worked example. A 10 mg vial reconstituted with 2 mL of bacteriostatic water gives a concentration of 5 mg/mL (5,000 mcg/mL). To transfer 250 mcg: 250 ÷ 5,000 = 0.05 mL. The vial yields approximately 40 aliquots of that size. In reverse: to reach 5 mg/mL from a 10 mg vial, add 10 ÷ 5 = 2 mL.
Choosing a diluent volume
More diluent produces a lower concentration, which means larger volumes for the same mass — easier to measure accurately at small scales. Less diluent concentrates the solution, which conserves vial space but makes small-mass measurement less precise, since a small volumetric error carries more mass with it.
Reconstituted volume should not exceed the vial’s capacity, and reconstituted solutions have a shorter stability window than lyophilized powder. See the diluent comparison for handling considerations.
Sermorelin on Frontier Peptide Labs
Common questions
How do you reconstitute a 5 mg Sermorelin vial?
Add your chosen volume of bacteriostatic or sterile water to the vial and divide the vial mass by that volume to get the concentration. A 5 mg Sermorelin vial with 2 mL of diluent gives 2.5 mg/mL (2500 mcg/mL).
What vial strengths of Sermorelin does Frontier Peptide Labs supply?
Sermorelin is supplied in 5 mg, 10 mg. The calculator above pre-loads these as presets, and any other value can be typed into the vial contents field.
What concentration does a 10 mg Sermorelin vial reach?
A 10 mg vial reaches 10 mg/mL with 1 mL of diluent, 5 mg/mL with 2 mL, and 3.333 mg/mL with 3 mL. Concentration is simply the vial mass divided by the diluent volume.
How much diluent does a Sermorelin vial need for a 2.5 mg/mL working concentration?
Divide the vial mass by the target concentration. For a 5 mg vial at 2.5 mg/mL that is 2 mL. Use the diluent volume tab of the calculator to run this in reverse for any strength.
How do you calculate peptide concentration after reconstitution?
Divide the mass of peptide in the vial by the volume of diluent added. A 10 mg vial reconstituted with 2 mL of bacteriostatic water gives a concentration of 5 mg/mL, equal to 5,000 mcg/mL.
What does mg/mL mean?
Milligrams of peptide per millilitre of solution. It is the ratio that links mass to volume: multiply a volume by the concentration to get the mass that volume contains, or divide a mass by the concentration to get the volume that contains it.
How much bacteriostatic water should be added to a 10 mg vial?
There is no single correct volume. The choice sets the concentration and therefore the transfer volume. 1 mL gives 10 mg/mL, 2 mL gives 5 mg/mL, and 3 mL gives approximately 3.33 mg/mL. Larger diluent volumes produce larger, easier-to-measure transfer volumes. Reconstituted volume should not exceed the vial’s capacity.
How do you calculate the volume to transfer in mL?
Divide the target amount by the concentration in matching units. At 5,000 mcg/mL, a 250 mcg target requires 250 divided by 5,000, which equals 0.05 mL.
How do you work out the diluent volume needed for a target concentration?
Divide the vial contents by the concentration you want. A 10 mg vial at a target of 4 mg/mL needs 10 divided by 4, which equals 2.5 mL of diluent. This is the reverse calculation, and it is the one to use when vials of different strengths need to share a single working concentration.
How do you convert between mg and mcg?
One milligram equals 1,000 micrograms. The calculator reports both so that small quantities stay readable without leading zeros.
What is an aliquot?
An aliquot is a measured portion taken from a larger volume of solution. For a reconstituted peptide vial, one aliquot is the amount removed in a single transfer. A 10 mg vial divided into 250 mcg portions yields 40 aliquots.
How many aliquots does one vial yield?
Divide the total vial contents by the target amount per aliquot in matching units. A 10 mg vial at 250 mcg per aliquot yields 10,000 divided by 250, which equals 40 aliquots. This figure is independent of how much diluent was added.
Does adding more diluent reduce the total amount of peptide?
No. The mass of peptide in the vial is fixed at the point of lyophilization. Diluent volume determines only the concentration of the resulting solution and the volume required to transfer a given amount.
Does this calculator account for the volume of the lyophilized powder itself?
No. It treats the final volume as equal to the diluent volume added, which is the standard simplification in reconstitution arithmetic. The powder’s displaced volume is negligible at the masses involved.
What is the difference between bacteriostatic and sterile water?
Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits bacterial growth and supports multi-draw use over a longer period. Sterile water contains no preservative and is intended for single use.
Does this tool calculate an amount to administer?
No. It performs concentration and mass-per-volume arithmetic only. It does not select, recommend, or compute any quantity for administration to humans or animals. Frontier Peptide Labs products are supplied for laboratory research use only.
Related guides
- Working with peptide blends: reconstitution math for BPC-157 + TB-500
- Bacteriostatic water vs. sterile water in research peptide reconstitution
- Reconstituting lyophilized BPC-157: a laboratory handling guide
- Browse all research peptide guides
Research Use Only. This calculator performs dilution arithmetic for laboratory reference purposes. It does not constitute a protocol, recommendation, or guidance of any kind. All products supplied by Frontier Peptide Labs are laboratory research compounds intended exclusively for qualified research and development use, and are not for human consumption, veterinary use, diagnostic use, cosmetic use, therapeutic application, or medical treatment. These statements have not been evaluated by the Food and Drug Administration.