Peptide Reconstitution Calculator
Vial mg + water mL → concentration and syringe draw for a mcg dose. Educational lab math only. Click any i for detail.
Reconstitution
Peptide in vial (mg)
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Vial
Labeled peptide mass in the vial. |
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Bacteriostatic water (mL)
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Water
Volume you add to reconstitute. |
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Desired dose (mcg)
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Dose
Target dose in micrograms. |
How to use this calculator
- Enter the vial’s peptide milligrams.
- Enter how many mL of water you add.
- Enter the desired dose in mcg.
- Read concentration and draw volume (mL and U-100 units).
Results explained
Concentration (mg/mL) = vial_mg / water_mL. Convert to mcg/mL (×1000), then draw_mL = dose_mcg / mcg_per_mL. On a U-100 insulin syringe, 1 mL = 100 units, so units ≈ draw_mL × 100. This is arithmetic only — it does not verify sterility, legality, dosing, or whether a compound is appropriate for you. Follow clinician and pharmacist instructions.
Quick reference: reconstitution math
draw_mL = dose_mcg / (vial_mg / water_mL × 1000).
| Item | Detail |
|---|---|
| 5 mg in 2 mL | 2.5 mg/mL = 2500 mcg/mL |
| 250 mcg dose | 0.1 mL = 10 units on U-100 |
| U-100 syringe | 100 units = 1 mL |
| Safety | Sterile technique and clinical guidance required |
Not medical advice — do not use for self-directed drug preparation without qualified supervision.
How the estimate is built
conc_mg/mL = vial_mg / water_mL; draw_mL = dose_mcg / (conc_mg/mL × 1000); units = draw_mL × 100.
Example scenario
5 mg in 2 mL, 250 mcg dose → 0.10 mL (10 units on U-100).
FAQ
Is this telling me what dose to take?
No. Dose selection is a clinical decision. This page only converts mass, volume, and concentration.
Why show insulin-syringe units?
Many people measure small volumes on U-100 syringes. Units here are volume marks, not insulin therapy advice.
What if my vial is labeled in mcg already?
Convert mcg to mg (÷1000) before entering vial mass, or scale the arithmetic consistently.
Can I store reconstituted peptides?
Storage and beyond-use dating depend on the product and sterile process — ask a pharmacist; this page does not cover stability.