Laboratory calculator
IGF-1 LR3 Units Chart (1 mg vial)
Worked example
For 1 mg of IGF-1 LR3, the chart row for 2 mL shows 0.5 mg/mL: 250 mcg is 50 units and 500 mcg is 100 units. The 5 mL row drops the concentration to 0.2 mg/mL and moves 250 mcg to 125 units.
Units chart
| Water added (mL) | Concentration (mg/mL) | Units on a U-100 syringe, by target amount (mcg) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 100 | 250 | 500 | 750 | 1000 | 1500 | 2000 | 2500 | 5000 | ||
| 1 | 1 | 5 | 10 | 25 | 50 | 75 | 100 | 150 | 200 | 250 | 500 |
| 2 | 0.5 | 10 | 20 | 50 | 100 | 150 | 200 | 300 | 400 | 500 | 1000 |
| 3 | 0.3333 | 15 | 30 | 75 | 150 | 225 | 300 | 450 | 600 | 750 | 1500 |
| 5 | 0.2 | 25 | 50 | 125 | 250 | 375 | 500 | 750 | 1000 | 1250 | 2500 |
How it works
Each cell is units = target amount in mg / concentration x 100, where concentration = vial mass / water volume. For 1 mg in 2 mL the concentration is 0.5 mg/mL, so a 250 mcg example amount is 0.25 / 0.5 x 100 = 50 units.
Frequently asked questions
What does a 250 mcg example amount of IGF-1 LR3 read on a U-100 syringe for a 1 mg vial?
It depends on the water volume: 25 units with 1 mL, 50 with 2 mL, 75 with 3 mL and 125 with 5 mL in a 1 mg vial.
Why do the chart rows differ for the same 1 mg of IGF-1 LR3?
More water lowers the concentration, from 1 mg/mL at 1 mL to 0.2 mg/mL at 5 mL, so the same target amount occupies more volume and reads more units.
How many mcg of IGF-1 LR3 does one syringe unit hold in this vial?
One unit is 0.01 mL. At 0.5 mg/mL (the 2 mL row) one unit holds 5 mcg of IGF-1 LR3.