Mixing 5 mg PT-141
Adding 2 mL of bacteriostatic water to a 5 mg vial of PT-141 gives 2.5 mg/mL: each 10 units on a U-100 insulin syringe holds 250 mcg. With 1 mL it's 5 mg/mL (500 mcg per 10 units); with 3 mL, 1.667 mg/mL (166.7 mcg per 10 units). More water makes small amounts easier to measure.
Bacteriostatic water chart for a 5 mg vial
Strength for each amount of water, and how much PT-141 10 units and 1 unit hold on a U-100 insulin syringe (100 units = 1 mL).
| Water added | Strength | Per 10 units (0.1 mL) | Per unit |
|---|---|---|---|
| 0.5 mL | 10 mg/mL | 1,000 mcg | 100 mcg |
| 1 mL | 5 mg/mL | 500 mcg | 50 mcg |
| 1.5 mL | 3.333 mg/mL | 333.3 mcg | 33.33 mcg |
| 2 mL | 2.5 mg/mL | 250 mcg | 25 mcg |
| 2.5 mL | 2 mg/mL | 200 mcg | 20 mcg |
| 3 mL | 1.667 mg/mL | 166.7 mcg | 16.67 mcg |
| 4 mL | 1.25 mg/mL | 125 mcg | 12.5 mcg |
| 5 mL | 1 mg/mL | 100 mcg | 10 mcg |
Units to draw for an amount (with 2 mL of water)
Arithmetic only, not a recommended amount. For what published studies actually gave, see PT-141 research. Use the calculator for other amounts or water volumes.
| Amount | Units | Volume |
|---|---|---|
| 50 mcg (0.05 mg) | 2 units | 0.02 mL |
| 100 mcg (0.1 mg) | 4 units | 0.04 mL |
| 250 mcg (0.25 mg) | 10 units | 0.1 mL |
| 500 mcg (0.5 mg) | 20 units | 0.2 mL |
| 1,000 mcg (1 mg) | 40 units | 0.4 mL |
| 2,000 mcg (2 mg) | 80 units | 0.8 mL |
| 2,500 mcg (2.5 mg) | 100 units | 1 mL |
Cheapest 5 mg PT-141 vials
One listing per vendor, vendors scoring 80%+ on Finnrick's independent lab testing, cheapest per mg first.
| Vendor | Listing | Price | Per mg | |
|---|---|---|---|---|
| Biolongevity Labs Metascore 73 · Finnrick 71% | PT-141 (5mg) 1 × 5 mg | USD 47.97 | USD 9.59 | Buy |
| Paramount Peptides Metascore 74 · Finnrick 64% | PT-141 (5mg) 1 × 5 mg | USD 51.00 | USD 10.20 | Buy |
Questions people ask
How much bacteriostatic water do I add to 5 mg of PT-141?
Adding 2 mL of bacteriostatic water to a 5 mg vial of PT-141 gives 2.5 mg/mL: each 10 units on a U-100 insulin syringe holds 250 mcg. With 1 mL it's 5 mg/mL (500 mcg per 10 units); with 3 mL, 1.667 mg/mL (166.7 mcg per 10 units). More water makes small amounts easier to measure.
How many units is 100 mcg of PT-141 from a 5 mg vial?
With 2 mL of water (2.5 mg/mL), 100 mcg is 4 units on a U-100 syringe; with 1 mL it's 2 units.
Where can I buy 5 mg PT-141 vials?
2 independently tested vendors list 5 mg PT-141 vials; the cheapest right now is Biolongevity Labs at USD 9.59 per mg (USD 47.97 for 1 × 5 mg).