PE-22-28 reconstitution calculator
Opens on an 8 mg vial, 3 mL of bacteriostatic water and a 200 mcg dose, amounts recorded for PE-22-28 in the compound library. Change any field and the draw updates.
Original calculator
The classic all-in-one form
Every input on one card, the way the original site worked.
Typical vial strength and dose filled in; recorded examples appear as one-tap presets.
- Draw 8 units for 200 mcg doses of PE-22-28.
- Concentration 2.67 mg/mL (8 mg in 3 mL). Each vial holds 40 doses of 0.08 mL.
The exact draw is 7.5 units; the syringe reads in whole units. 8 units deliver about 213 mcg, 13.3 mcg over the amount entered.
For research and educational use. This calculator does not provide medical advice.
How the numbers work for PE-22-28
An 8 mg vial of PE-22-28 with 3 mL of bacteriostatic water is 8 / 3 = 2.67 mg/mL. A 200 mcg dose (0.2 mg) is 0.2 / 2.67 = 0.075 mL, which is 8 units on a U-100 syringe, or the same number of clicks on a pen. With 2 mL of water instead, the concentration is 4 mg/mL and the same dose is 5 units. At that dose the vial holds 40 doses.
The formulas are the same for every compound: concentration is the vial amount divided by the water, the draw is the dose divided by the concentration, and a U-100 unit is 0.01 mL. They are written out on the methodology page.
PE-22-28 units at a glance
Syringe units for the amounts recorded for PE-22-28, from an 8 mg vial, across the water volumes people most often use. These are recorded examples used for the arithmetic, not recommendations; a draw under 6 units is hard to measure repeatably and more water fixes that.
| Dose | 1 mL water8 mg/mL | 2 mL water4 mg/mL | 3 mL water2.67 mg/mL |
|---|---|---|---|
| 200 mcg | 3 units0.025 mL | 5 units0.05 mL | 8 units0.075 mL |
| 600 mcg | 8 units0.075 mL | 15 units0.15 mL | 23 units0.23 mL |
Where the amounts come from
The doses above are recorded amounts from the PE-22-28 entry in the compound library, which lists the sources behind them, labels each as clinical, preclinical or community-reported, and states what the evidence can and cannot support. The vial strength is the one most often listed by suppliers. Nothing on this page is medical advice.
Common questions about PE-22-28
- Is PE-22-28 an FDA-approved medicine?
- No regulator has approved a product containing PE-22-28, no application is before the FDA, and it has not been nominated for compounding. It is sold as a research chemical, which is not a legal basis for use in people.
- How much bacteriostatic water do I add to an 8 mg vial of PE-22-28?
- There is no single right amount: the water sets the concentration and the size of the draw, not the dose. This page opens on 3 mL, which makes 2.67 mg/mL and puts a 200 mcg dose at 8 units on a U-100 syringe. With 1 mL the same dose is 3 units; with 3 mL it is 8 units. More water gives a larger, easier-to-read draw, as long as the vial can hold it.
- How many units is 200 mcg of PE-22-28?
- At 2.67 mg/mL (8 mg in 3 mL of water), 200 mcg is 0.075 mL, which is 8 units on a U-100 insulin syringe or 8 clicks on a peptide pen. At any other concentration the number changes; the units table on this page gives the other common water volumes.
- How many doses are in an 8 mg vial of PE-22-28?
- At 200 mcg per dose, an 8 mg vial holds 40 doses. The water volume changes the size of each draw, not the number of doses in the vial.
- Where do the PE-22-28 amounts on this page come from?
- They are amounts recorded for PE-22-28 in the compound library (https://peptidescalculator.com/compound-library/pe2228), which lists the sources behind them and labels each as clinical, preclinical or community-reported. They are shown for the arithmetic, not as recommendations, and the vial strength is the one suppliers list most often. Nothing on this page is medical advice.