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Cortagen: 20 mg vial with 3 mL water
Quick answer
Adding 3 mL of bacteriostatic water to a 20 mg Cortagen vial gives 6.67 mg/mL (6666.7 mcg/mL), so each unit on a U-100 insulin syringe holds 66.7 mcg. A 1 mg dose is 15 units (0.15 mL), and the vial holds about 20 doses of that size.
Concentration
- Vial: 20 mg Cortagen
- Bacteriostatic water: 3 mL (the volume in the Crestigen protocol)
- Concentration: 6.67 mg/mL (6666.7 mcg/mL)
- 1 unit on a U-100 syringe = 66.7 mcg
Cortagen dose to syringe units
| Dose | Syringe units (U-100) | Volume | Doses per vial |
|---|---|---|---|
| 100 mcg | 1.5 units | 0.015 mL | 200 |
| 200 mcg | 3 units | 0.03 mL | 100 |
| 250 mcg | 3.7 units | 0.038 mL | 80 |
| 300 mcg | 4.5 units | 0.045 mL | 66 |
| 500 mcg | 7.5 units | 0.075 mL | 40 |
| 750 mcg | 11.3 units | 0.112 mL | 26 |
| 1 mg (protocol dose) | 15 units | 0.15 mL | 20 |
| 2 mg (protocol dose) | 30 units | 0.3 mL | 10 |
Units on a U-100 insulin syringe (100 units = 1 mL).
Common questions
How many units is 1 mg of Cortagen from a 20 mg vial with 3 mL water?
1 mg is 15 units (0.15 mL) on a U-100 insulin syringe. With 3 mL of water in a 20 mg vial, each unit holds 66.7 mcg. For comparison: 500 mcg = 7.5 units, 750 mcg = 11.3 units, 2 mg = 30 units.
What is the concentration of a 20 mg Cortagen vial mixed with 3 mL of water?
20 mg divided by 3 mL is 6.67 mg/mL, or 6666.7 mcg per mL. On a U-100 syringe (100 units = 1 mL) that is 66.7 mcg per unit.
How many 1 mg doses are in a 20 mg vial?
About 20. The water volume changes how many units each dose takes, not how many doses the vial holds.
How much water should I add to a 20 mg Cortagen vial?
3 mL is the volume used in the Crestigen Cortagen protocol. More water makes each dose a larger, easier-to-measure number of units; less water keeps injections smaller.
Other Cortagen vial and water combinations
- 20 mg vial + 1 mL water
- 20 mg vial + 2 mL water
- 20 mg vial + 3 mL water
Open this in the dosage calculator · Full Cortagen protocol, reconstitution and storage