Reference chart
Peptide reconstitution chart
Reconstitution is one division: concentration = vial (mg) ÷ bacteriostatic water (mL). This printable peptide reconstitution chart does that division for the common vial-and-water combinations, then shows how many micrograms sit under each unit on a U-100 syringe. It never recommends a dose — the numbers come from your vial.
Concentration (mg/mL)
Vial strength down the side, bacteriostatic water added across the top.
| Vial | 1 mL | 2 mL | 3 mL | 5 mL |
|---|---|---|---|---|
| 2 mg | 2 mg/mL | 1 mg/mL | 0.67 mg/mL | 0.40 mg/mL |
| 5 mg | 5 mg/mL | 2.50 mg/mL | 1.67 mg/mL | 1 mg/mL |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL | 2 mg/mL |
| 15 mg | 15 mg/mL | 7.50 mg/mL | 5 mg/mL | 3 mg/mL |
| 20 mg | 20 mg/mL | 10 mg/mL | 6.67 mg/mL | 4 mg/mL |
| 30 mg | 30 mg/mL | 15 mg/mL | 10 mg/mL | 6 mg/mL |
| 50 mg | 50 mg/mL | 25 mg/mL | 16.7 mg/mL | 10 mg/mL |
Micrograms per unit (U-100 syringe)
How many micrograms sit under one tick mark (0.01 mL) at each concentration — a reading aid, not a dose.
| Vial | 1 mL | 2 mL | 3 mL | 5 mL |
|---|---|---|---|---|
| 2 mg | 20 mcg/u | 10 mcg/u | 6.67 mcg/u | 4 mcg/u |
| 5 mg | 50 mcg/u | 25 mcg/u | 16.7 mcg/u | 10 mcg/u |
| 10 mg | 100 mcg/u | 50 mcg/u | 33.3 mcg/u | 20 mcg/u |
| 15 mg | 150 mcg/u | 75 mcg/u | 50 mcg/u | 30 mcg/u |
| 20 mg | 200 mcg/u | 100 mcg/u | 66.7 mcg/u | 40 mcg/u |
| 30 mg | 300 mcg/u | 150 mcg/u | 100 mcg/u | 60 mcg/u |
| 50 mg | 500 mcg/u | 250 mcg/u | 166.7 mcg/u | 100 mcg/u |
One U-100 unit = 0.01 mL. mcg per unit = concentration (mg/mL) × 0.01 × 1000. Syringe marks vary by syringe type — confirm yours is U-100 before reading these values.
Turn a concentration into an exact draw
The chart stops at concentration on purpose. Once you have a concentration and a dose your clinician has given you, the mg-to-units web converterfinishes the arithmetic and shows the draw in mL and U-100 syringe units. For a single medication, thetirzepatide andsemaglutide converters do the same in one step.
Why two people with the same vial can draw different amounts
The chart makes it visible: concentration depends entirely on how much water you add. The same 10 mg vial is 10 mg/mL with 1 mL of water but 2 mg/mL with 5 mL — a five-fold difference in how many units carry the same amount of peptide. That is why a dose only means something once the concentration is fixed, and why copying someone else's unit count without matching their reconstitution can be wrong. Read your own label; do your own division.
Common questions
What is a peptide reconstitution chart?
It is a quick-reference table that shows the concentration you end up with when you add a given volume of bacteriostatic water to a vial of a given strength. Concentration is simply the vial amount in mg divided by the water you add in mL, so a 10 mg vial plus 2 mL of water is 5 mg/mL. The chart just does that division for the common combinations so you do not have to.
How do you read the mcg-per-unit chart?
On a U-100 (insulin-style) syringe, one unit is 0.01 mL. Multiply the concentration by 0.01 mL to get the milligrams in a single unit, then by 1000 to read it in micrograms. The second table does this for you — it tells you how many micrograms sit under each tick mark for that vial-and-water combination. It is a reference for reading your syringe, not a recommended dose.
How much bacteriostatic water should I add?
That is a choice about how concentrated you want the solution and how fine you want the syringe marks to be — there is no single correct answer, and it is not something this chart decides for you. Adding more water lowers the concentration and spreads the same amount of peptide across more units. Whatever volume you add, the chart shows the concentration it produces.
Does the chart tell me my dose?
No. The chart only converts a vial strength and a water volume into a concentration — it never suggests how much to take. Your dose comes from you and your clinician. Once you know your concentration, the reconstitution calculator turns a dose you already have into the exact draw in mL and units.
Can I print this or save it as a PDF?
Yes. Use the “Print / Save as PDF” button above the chart, or your browser’s print command, and choose “Save as PDF” as the destination. The page is laid out to print cleanly on a single sheet for taping inside a fridge or a supply kit.
New to this? Start with what are peptides or the plain-EnglishBPC-157 explainer. To convert a dose you already have, use the mg to units calculator.