Pick the vial, the water you added and the dose. Get the exact draw in units for the syringe in your hand.
Draw to70.0units0.70 mL
Step 1 of 4
1How many mg are in your vial?
Vial strengthamount printed on the vial
2How many mL of water did you add?
Bacteriostatic water addedhow much water you added
3What dose do you want to convert?
Target doseenter the dose you want to convert
This vial holds 2 mg in total.
4Which syringe are you using?
Syringe typematch the label on your syringe
U-100 insulin syringe · 1 mL · lines every 2 units · 1 unit = 0.01 mL
Draw to
70.0units
0.70 mL · 2.00 mg/mL · 20 mcg per unit · 1 doses per vial
70.0 units on a U-100 insulin syringe · 1 mL · lines every 2 units, which is 0.70 milliliters. The draw lands on a syringe line.
Easy to read on this syringe. Draw to the 70-unit line. No rounding is needed.
2 mg ÷ 1 mL = 2.00 mg/mL → 20 mcg/unit · 1.4 mg = 0.700 mL =70.0 units
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Show the math and syringe details+
Can this syringe show the result clearly?
Easy to read on this syringe.70.0 u is exactly the 70-unit line on a U-100 — no rounding error at all.
Want an easier syringe number?
This setup is already easy to read. Changing the water between 0.5 and 3 mL would not put 1.4 mg closer to a line on this U-100 syringe.
Adding more water makes the mixture less concentrated, so the same dose uses more syringe units. It does not change how much peptide is in the vial.
This setup is in the address bar — every input is part of the link.
Educational math, not medical advice — dosing decisions belong to a licensed clinician. The tabs above also plan a schedule week by week and count how many doses one vial holds.
How to use the calculator
STEP 1
Enter the amount in the vial
Use the total amount printed on the vial, in mg.
STEP 2
Enter the water you added
Use the amount of water added to that vial, in mL.
STEP 3
Enter the dose you want to convert
Choose mg or mcg, then match the result to your syringe.
Tesamorelin is a prescription copy of the hormone that prompts growth hormone release, sold as Egrifta. It is approved for one thing: reducing excess belly fat in adults with HIV-related lipodystrophy. It is bought off-label for visceral fat and for general anti-aging.
Its label is unusually blunt about the second use. It says the drug is not approved for weight loss, and describes the effect on body weight as neutral.
Examples using a 2 mg Tesamorelin vial
Each row starts with the same 2 mg vial and changes only the amount of water. More water makes the mixture less concentrated, so the same dose uses more syringe units.
◆ How the water amount changes the resultdose used: 1.4 mg
For a 2 milligram vial: bacteriostatic water added, resulting concentration, micrograms per U-100 unit, and the draw for a 1.4 mg dose.
Water added
Concentration
Per U-100 unit
Draw for 1.4 mg
Nearest syringe line
0.5 mL
4.00 mg/mL
40.0 mcg
35.0 u · 0.350 mL
36 u · 2.9% off
1 mL
2.00 mg/mL
20.0 mcg
70.0 u · 0.700 mL
exactly 70 u
2 mL
1.00 mg/mL
10.0 mcg
140.0 u · 1.400 mL
past the 100 u barrel
The vial, water and dose shown here are the calculator’s starting example for Tesamorelin. Replace them with your own values. Every result in the table is calculated from those inputs.
Drawn from once a week at 1.4 mg, a 2 mg vial yields 1 doses — about 1.0 weeks of supply. No cited source says how long the mixed vial keeps, so no storage window is shown.
A vial that is barely more than one dose
Tesamorelin is the only FDA-approved compound here whose own label includes a mixing step. It is also the one where a vial holds a single daily dose and a remainder that is not another one.
3Open the mixing details — 3 notes
There is nothing to ration
This vial contains only slightly more than one labeled daily dose. After one full dose, there is not enough left for another.
That changes the shape of the vial-life question. On most compounds the useful number is how many doses you get before the vial runs dry. Here the useful number is how much you are throwing away, and it is not small.
A mixing volume the label chose, not a habit
The water amount is smaller than the examples used for most other compounds because it matches the approved product’s preparation.
Reach past it for a larger volume out of habit and the daily dose runs past the end of a U-100 barrel. One injection becomes two draws. The habit is harmless on a research peptide. It is not harmless here.
The mistake: mixing two products’ numbers together
Two versions of the approved medicine exist. They differ in vial strength, in daily dose, in mixing liquid and in storage. Their own labels state they are not interchangeable.
A unit count worked out for one describes the other only by coincidence. Check which version a number came from before reusing it. That check earns more here than anywhere else on the site.
A label dose, a label liquid, and a number that arrives with conditions
The number in the dose box here is not a range or a trial arm. It is a fixed daily amount printed on an approved label. That gives it more behind it than anything else in this family. It also gives it far less room to move.
4Read the supporting evidence — 4 supporting notes
A label dose does not stretch, and this one carries no ladder
The sources include one quantity. Its framing says the label specifies it. There is no titration here, because the label publishes none. The dose does not climb over weeks. It starts where it ends.
The liquid on the label is not the liquid in the presets
Every water volume on this page is bacteriostatic water. That is what these vials are mixed with everywhere else on the site. The label for this presentation directs sterile water instead. It also says to use the solution straight away.
The other form is not on this page, and it takes the storage answer with it
Two forms of this medicine are sold. This page describes one of them, and the choice was not arbitrary.
A label dose comes bundled with tests the tool cannot hand you
This is what separates an approved number from a circulating one, and it is easy to miss. The label does not only say how much. It says what to watch while the drug is being given.
Units to dose at 2.00 mg/mL
Mix 2 mg into 1 mL and one U-100 unit carries 20.0 mcg. The table shows how much peptide is in each numbered syringe line. These are conversion examples, not suggested doses.
10Open the unit conversion table — 10 rows
Numbered U-100 syringe lines converted to volume and mass at 2.00 milligrams per milliliter.
U-100 line
Volume
Mass (mcg)
Mass (mg)
10 u
0.10 mL
200 mcg
0.2 mg
20 u
0.20 mL
400 mcg
0.4 mg
30 u
0.30 mL
600 mcg
0.6 mg
40 u
0.40 mL
800 mcg
0.8 mg
50 u
0.50 mL
1,000 mcg
1 mg
60 u
0.60 mL
1,200 mcg
1.2 mg
70 u
0.70 mL
1,400 mcg
1.4 mg
80 u
0.80 mL
1,600 mcg
1.6 mg
90 u
0.90 mL
1,800 mcg
1.8 mg
100 u
1.00 mL
2,000 mcg
2 mg
How the math works
Concentration — divide the amount in the vial by the water you added: mg ÷ mL = mg/mL. This tells you how many mg are in each mL.
Volume — the dose divided by that concentration: dose ÷ (mg/mL) = mL.
Units — on a U-100 syringe one unit is 0.01 mL, so mL × 100 = units. A U-40 unit is 0.025 mL, so the wrong barrel is a 2.5× error. That is why the calculator asks which one you have.
Rounding gap — the exact draw against the nearest syringe line: |exact − nearest line| ÷ exact × 100 = % difference.
Medically reviewed by Jennifer Montecillo, MD · non-practicing medical reviewer·Reviewed 2026-08-12·open the primary sources
Useful guides for this calculation
The math is only one part of the question. These guides cover the compound, published doses, side effects, mixing steps and supplies.
10 mg is not a strength either approved form comes in. Egrifta SV holds 2 mg a vial and Egrifta WR holds 11.6 mg, and their own labels state the two are not substitutable.
The arithmetic for 10 mg is ordinary. 1 mL gives 10 mg/mL and 2 mL gives 5, so the labeled 1.4 mg daily quantity reads 14 or 28 units. Note that the WR label states 8 mg/mL after 1.3 mL of diluent, which plain division does not produce.
How do I reconstitute 5mg of tesamorelin?
Not a strength on this page either, which carries the 2 mg Egrifta SV vial alone. A 5 mg vial would read 10 mg/mL at 0.5 mL, 5 mg/mL at 1 mL, and 2.5 mg/mL at 2 mL.
The 1.4 mg daily quantity draws 14, 28 or 56 units across those. A 5 mg vial would also hold three of those doses where the 2 mg vial holds one. That difference is why the SV label treats its vial as a single dose and the rest as waste.
How much BAC water for 10mg tesamorelin calculator?
For the vial the label actually describes, the answer is 0.5 mL, far below the volumes most compounds here use. 2 mg in 0.5 mL is 4 mg/mL, and the 1.4 mg dose is 0.35 mL — the 35 units that volume implies.
Reach past it out of habit and the arithmetic bites. The same 2 mg vial in 2 mL puts one daily dose at 140 units, which will not fit a U-100 barrel. On a 10 mg vial the pressure runs the other way, since more powder tolerates more water.
Is 1 mg of tesamorelin enough?
Enough for what is the half nobody can answer, but the labeled quantities are on record and 1 mg is not among them. Egrifta SV sets 1.4 mg once daily, and Egrifta WR sets 1.28 mg.
Both labels cover one use: reducing excess abdominal fat in HIV-infected adults with lipodystrophy. Both also state the drug is not for weight loss management, and that its effect on body weight is neutral. No trial tested 1 mg, so no result exists at that quantity to compare.
1primary source, each with the day we read it — open the documents used on this page