With 1 mL bacteriostatic water
4.0 units
Page last checked
Reconstitution · IGF-1 LR3
IGF-1 LR3 dosage calculator
Pick the vial, the water you added and the dose. Get the exact draw in units for the syringe in your hand.
Step 1 of 4
- total mg in the calculation
- mL used in the calculation
- mcg
This vial holds 1,000 mcg in total.
- match the size on the package
U-100 insulin syringe · 1 mL · lines every 2 units · 1 unit = 0.01 mL
Draw to
8.0units
8.0 units on a U-100 insulin syringe · 1 mL · lines every 2 units, which is 0.08 milliliters. The draw lands on a syringe line.
1 mg ÷ 2 mL = 0.50 mg/mL
→ 5 mcg/unit · 40 mcg = 0.080 mL = 8.0 units
→ 5 mcg/unit · 40 mcg = 0.080 mL = 8.0 units
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Show the math and syringe details
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How to use the calculator
- 1
Enter the amount in the vial
- 2
Enter the water you added
- 3
Enter the dose you want to convert
IGF-1 LR3 is a re-engineered insulin-like growth factor 1. The changes stop your carrier proteins holding it back, so it stays active far longer than the natural version. Bodybuilding forums use it to grow muscle, usually on the back of a growth-hormone course.
Its documented job is industrial. It is sold as a catalogue reagent for growing cells in tanks, where staying active is exactly the selling point. No study of it in people has ever been registered. The change that makes it useful in a tank is the change that removes your body’s own brake on the signal.
No completed controlled human trial has shown which dose works for IGF-1 LR3. The range people report using is not a study result, tested schedule or recommendation.
no human dose shown to work
Examples using 1 mg of IGF-1 LR3
Each row uses 1 mg and the liquid volume shown. Dividing the amount by that volume gives the calculated concentration. The rows are arithmetic examples, not alternative product preparations.
◆ How liquid volume changes the resultdose used: 40 mcg
With 2 mL bacteriostatic water
8.0 units
| Bacteriostatic water | Concentration | Per U-100 unit | Draw for 40 mcg | Nearest syringe line |
|---|---|---|---|---|
| 1 mL | 1.00 mg/mL | 10.0 mcg | 4.0 u · 0.040 mL | exactly 4 u |
| 2 mL | 0.50 mg/mL | 5.0 mcg | 8.0 u · 0.080 mL | exactly 8 u |
The amount, liquid volume and dose shown here are the calculator’s starting example for IGF-1 LR3. Replace them with your own values. Every result in the table is calculated from those inputs.
IGF-1 LR3: the two vial presets differ tenfold
The larger IGF-1 LR3 vial preset contains ten times the amount in the smaller one. With the same water volume, that means ten times the concentration. Selecting the wrong vial changes the result far more than rounding does.
Open the mixing details3 notes
Compare the amount, not the size of the container
The vial field uses the amount of IGF-1 LR3, not the physical size of the glass container. A container’s appearance does not establish the mass or concentration needed for the calculation.
For the same entered dose and water volume, the larger vial preset produces a smaller draw. The smaller preset produces a larger draw. The tenfold difference comes from the amount in the vial and remains part of the calculation even when the containers look similar.
More water changes volume, not the amount available
Increasing the water volume lowers the calculated concentration. The same entered dose then occupies more space on the syringe. The result’s measurement details show whether that volume fits the selected syringe and how it relates to its markings.
This change does not add IGF-1 LR3 to the vial. At the same dose, the calculated number of doses stays the same. A larger draw therefore does not mean a larger supply, and a dose count does not establish how long a preparation can be stored.
The calculation cannot identify the material
The tool uses the substance name and mass entered. It cannot test whether a vial contains IGF-1 LR3, confirm its purity or assess whether it is suitable for a person.
A result that is easy to read on a syringe remains an arithmetic result. The compound guide carries the separate evidence discussion; the calculator does not turn a laboratory-use description into a human dosing instruction.
IGF-1 LR3 is not the approved medicine mecasermin
The reported IGF-1 LR3 range comes from a review of how people use it, not a human dose trial of this analogue. Despite the similar name, it is not mecasermin, the approved medicine made with human IGF-I.
Read the supporting evidence3 supporting notes
A related medicine cannot supply the missing dose
Mecasermin’s label applies to that drug and the patients it treats. It cannot supply a starting dose or schedule for this analogue. Nor can its side-effect rates tell us how often the same events would occur with IGF-1 LR3.
A concentration error can change the amount delivered
The calculation assumes the entered vial strength is correct. Too much or too little ingredient changes the actual amount in each draw. That uncertainty is not merely a question of wasting powder or money.
Reported cycles do not establish a course of treatment
The review describes repeated use and breaks as reports of practice. A supply estimate can count doses under a schedule you enter. It does not show that the cycle works or that a mixed vial will keep for that long.
A related medicine cannot supply the missing dose
Mecasermin’s label applies to that drug and the patients it treats. It cannot supply a starting dose or schedule for this analogue. Nor can its side-effect rates tell us how often the same events would occur with IGF-1 LR3.
A concentration error can change the amount delivered
The calculation assumes the entered vial strength is correct. Too much or too little ingredient changes the actual amount in each draw. That uncertainty is not merely a question of wasting powder or money.
Reported cycles do not establish a course of treatment
The review describes repeated use and breaks as reports of practice. A supply estimate can count doses under a schedule you enter. It does not show that the cycle works or that a mixed vial will keep for that long.
Units to dose at 0.50 mg/mL
Mix 1 mg into 2 mL and one U-100 unit carries 5.0 mcg. The table shows how much peptide is in each numbered syringe line. These are conversion examples, not suggested doses.
Open the unit conversion table10 rows
| U-100 line | Volume | Mass (mcg) | Mass (mg) |
|---|---|---|---|
| 10 u | 0.10 mL | 50 mcg | 0.05 mg |
| 20 u | 0.20 mL | 100 mcg | 0.1 mg |
| 30 u | 0.30 mL | 150 mcg | 0.15 mg |
| 40 u | 0.40 mL | 200 mcg | 0.2 mg |
| 50 u | 0.50 mL | 250 mcg | 0.25 mg |
| 60 u | 0.60 mL | 300 mcg | 0.3 mg |
| 70 u | 0.70 mL | 350 mcg | 0.35 mg |
| 80 u | 0.80 mL | 400 mcg | 0.4 mg |
| 90 u | 0.90 mL | 450 mcg | 0.45 mg |
| 100 u | 1.00 mL | 500 mcg | 0.5 mg |
How the math works
- Concentration — divide the amount entered by the liquid volume used in the calculation: 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.
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.