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Sermorelin turns up in prescriptions as an amount in micrograms, while the syringe is marked in units. This calculator converts one to the other. It only does the math. Your prescriber decides the dose, and your pharmacy label tells you the vial size and how much diluent to add.
Step 1: Enter your vial size in mg. Use the amount on the pharmacy label, such as 9 mg. If yours isn't one of the presets, type it in.
Step 2: Enter the diluent volume. This is the bacteriostatic water or other diluent your pharmacy told you to add. If your vial arrived already mixed, use the concentration on the label: a vial labelled 3 mg/mL is the same as 9 mg in 3 mL.
Step 3: Choose your syringe. Sermorelin amounts usually come out under 30 units, so a 0.3 mL (30 unit) syringe is the easiest to read.
Step 4: Enter your prescribed amount in mcg. The presets are shortcuts, not recommendations. Always use the number your prescriber gave you.
With the defaults shown, a 9 mg vial mixed with 3 mL is 3 mg/mL (3,000 mcg/mL), so each unit holds 30 mcg and 300 mcg is 10 units. A 6 mg vial in the same 3 mL is 2 mg/mL, and 300 mcg becomes 15 units.
Sermorelin was once FDA-approved under the brand name Geref. Its maker stopped selling it in the US in 2008, and in 2013 the FDA confirmed that Geref was not withdrawn for reasons of safety or effectiveness (Federal Register).
The sermorelin prescribed today comes from compounding pharmacies. Compounded drugs aren't FDA-approved, which means the FDA hasn't reviewed that specific product for safety, effectiveness, or quality. Get it only through a licensed prescriber and pharmacy, never from sellers marketing "research use only" vials. Sermorelin is also banned at all times on the WADA prohibited list, so tested athletes should check before using it.
100 units on a U-100 syringe is always 1 mL. How many micrograms that holds depends on your concentration. Many sermorelin vials are mixed with 3 mL, so this table uses the concentrations for 3 mg, 6 mg, and 9 mg vials at that volume.
The formula behind it is: units = amount in mcg ÷ concentration in mcg/mL × 100. If you switch pharmacies or vial sizes, recalculate. The same unit count can hold a different amount.
Our peptide syringe units guide explains how each syringe size is marked. The general peptide calculator covers any other peptide, and PeptideKit can remind you of each dose and keep a log to share with your prescriber.
Divide the vial's mcg (mg × 1,000) by the mL of diluent to get mcg/mL. Divide your prescribed amount by that concentration, then multiply by 100 for U-100 syringe units.
At 3 mg/mL (9 mg in 3 mL), 300 mcg is 10 units. At 2 mg/mL (6 mg in 3 mL), it's 15 units. At 1 mg/mL, it's 30 units. Check your own vial's concentration first.
10 units is 0.1 mL. At 1 mg/mL that's 100 mcg, at 2 mg/mL it's 200 mcg, and at 3 mg/mL it's 300 mcg.
Not today. The original brand, Geref, was approved but discontinued in 2008. Sermorelin available now is compounded, and compounded drugs aren't FDA-approved.
Follow your pharmacy and prescriber. Check that you entered the vial size and diluent volume exactly as they appear on the label, and call the pharmacy if the numbers still don't line up.
Always consult with qualified healthcare professionals before starting any peptide therapy protocol. This information is for educational purposes only and does not constitute medical advice.
Sermorelin Dosage Calculator
Enter your sermorelin vial size, how much diluent was added, and the amount your prescriber gave you in mcg. The calculator shows how many units to draw on a U-100 insulin syringe.
Peptide Amount in Vial
BAC Water
Syringe
Target Dose
Use the dose on your prescription. Presets are shortcuts, not recommendations.
Unit Rounding
Round the result to a whole or half unit mark you can read on your syringe.
Peptide Amount (Total in Vial)
Desired Concentration
How to Use the Sermorelin Calculator
Sermorelin turns up in prescriptions as an amount in micrograms, while the syringe is marked in units. This calculator converts one to the other. It only does the math. Your prescriber decides the dose, and your pharmacy label tells you the vial size and how much diluent to add.
Step 1: Enter your vial size in mg. Use the amount on the pharmacy label, such as 9 mg. If yours isn't one of the presets, type it in.
Step 2: Enter the diluent volume. This is the bacteriostatic water or other diluent your pharmacy told you to add. If your vial arrived already mixed, use the concentration on the label: a vial labelled 3 mg/mL is the same as 9 mg in 3 mL.
Step 3: Choose your syringe. Sermorelin amounts usually come out under 30 units, so a 0.3 mL (30 unit) syringe is the easiest to read.
Step 4: Enter your prescribed amount in mcg. The presets are shortcuts, not recommendations. Always use the number your prescriber gave you.
With the defaults shown, a 9 mg vial mixed with 3 mL is 3 mg/mL (3,000 mcg/mL), so each unit holds 30 mcg and 300 mcg is 10 units. A 6 mg vial in the same 3 mL is 2 mg/mL, and 300 mcg becomes 15 units.
Sermorelin's FDA Status
Sermorelin was once FDA-approved under the brand name Geref. Its maker stopped selling it in the US in 2008, and in 2013 the FDA confirmed that Geref was not withdrawn for reasons of safety or effectiveness (Federal Register).
The sermorelin prescribed today comes from compounding pharmacies. Compounded drugs aren't FDA-approved, which means the FDA hasn't reviewed that specific product for safety, effectiveness, or quality. Get it only through a licensed prescriber and pharmacy, never from sellers marketing "research use only" vials. Sermorelin is also banned at all times on the WADA prohibited list, so tested athletes should check before using it.
Sermorelin Units to mcg Conversion Table
100 units on a U-100 syringe is always 1 mL. How many micrograms that holds depends on your concentration. Many sermorelin vials are mixed with 3 mL, so this table uses the concentrations for 3 mg, 6 mg, and 9 mg vials at that volume.
| Syringe units | Volume | At 1 mg/mL | At 2 mg/mL | At 3 mg/mL |
|---|---|---|---|---|
| 5 units | 0.05 mL | 50 mcg | 100 mcg | 150 mcg |
| 10 units | 0.1 mL | 100 mcg | 200 mcg | 300 mcg |
| 15 units | 0.15 mL | 150 mcg | 300 mcg | 450 mcg |
| 20 units | 0.2 mL | 200 mcg | 400 mcg | 600 mcg |
| 25 units | 0.25 mL | 250 mcg | 500 mcg | 750 mcg |
| 30 units | 0.3 mL | 300 mcg | 600 mcg | 900 mcg |
Our peptide syringe units guide explains how each syringe size is marked. The general peptide calculator covers any other peptide, and PeptideKit can remind you of each dose and keep a log to share with your prescriber.
Frequently Asked Questions
How do I calculate sermorelin units?
Divide the vial's mcg (mg × 1,000) by the mL of diluent to get mcg/mL. Divide your prescribed amount by that concentration, then multiply by 100 for U-100 syringe units.
How many units is 300 mcg of sermorelin?
At 3 mg/mL (9 mg in 3 mL), 300 mcg is 10 units. At 2 mg/mL (6 mg in 3 mL), it's 15 units. At 1 mg/mL, it's 30 units. Check your own vial's concentration first.
How much sermorelin is in 10 units?
10 units is 0.1 mL. At 1 mg/mL that's 100 mcg, at 2 mg/mL it's 200 mcg, and at 3 mg/mL it's 300 mcg.
Is sermorelin FDA approved?
Not today. The original brand, Geref, was approved but discontinued in 2008. Sermorelin available now is compounded, and compounded drugs aren't FDA-approved.
What if my pharmacy's instructions don't match the calculator?
Follow your pharmacy and prescriber. Check that you entered the vial size and diluent volume exactly as they appear on the label, and call the pharmacy if the numbers still don't line up.
Always consult with qualified healthcare professionals before starting any peptide therapy protocol. This information is for educational purposes only and does not constitute medical advice.