Enter your tesamorelin vial size and the volume of bacteriostatic water you are adding. The calculator returns the concentration in mcg/ml and the exact units to draw on a U-100 insulin syringe. It works for the common 5mg and 10mg vials.
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Results
Concentration
5000 mcg/ml
5 mg/ml
Volume to inject
0.4 ml
per dose
Units on insulin syringe (U-100)
40 units
on a standard 100-unit insulin syringe
Doses per vial
2 doses
at 2000 mcg each
How this is calculated
5mg × 1,000 = 5000 mcg total
5000 ÷ 1ml = 5000 mcg/ml
2000 mcg ÷ 5000 = 0.4 ml
0.4 ml × 100 = 40 units
Disclaimer: This calculator is provided for informational purposes only. Always verify results against your specific vial labelling before use. Peptidy does not provide medical advice — consult a qualified healthcare professional before beginning or modifying any protocol. Use of research peptides may be subject to legal restrictions in your jurisdiction.
Tesamorelin is a growth-hormone-releasing hormone (GHRH) analogue, typically dosed once daily by subcutaneous injection. Because the daily dose (around 2mg) is a meaningful fraction of a 5mg vial, the reconstitution concentration determines how comfortable your injection volume is.
Reflects the standard once-daily subcutaneous dosing used for tesamorelin. It is typically injected in the abdomen.
| Common daily dose | 2 mg (2,000 mcg) once daily |
| Lower daily dose | 1 mg (1,000 mcg) once daily |
Worked example: 5mg vial + 1ml BAC water, 2mg dose
1ml gives a concentrated 5,000 mcg/ml, so a 2mg dose is 0.4ml = 40 units. If you prefer a smaller number on the syringe, use less water; 2ml would give 2,500 mcg/ml and a larger 0.8ml (80-unit) injection.
With a 5mg vial reconstituted in 1ml (5,000 mcg/ml): 2,000 ÷ 5,000 = 0.4ml = 40 units. With a 10mg vial in 2ml (5,000 mcg/ml): the same 40 units. Enter your own figures above to confirm.
Tesamorelin is typically administered once daily by subcutaneous injection, usually in the abdomen. A 5mg vial provides roughly 2.5 days of a 2mg dose, so most people reconstitute with the vial's daily use in mind.
Refrigerate at 2–8°C away from light and label the vial with the date. Reconstituted tesamorelin is commonly used within 1–2 weeks; check your supplier's guidance. Do not freeze it.
Store your vial concentration, log every dose against it, and never lose track of what you injected or when.