Panacea Bio Chem — Peptide ToolsUnits · conversions · questions
Peptide dose units, explained
The short reference behind the peptide dosage calculator — the handful of ideas that make every peptide dose calculation identical, whatever the molecule.
U-100 vs U-40 insulin syringes
Insulin syringes are graduated in units, not millilitres. The scale differs:
| Syringe | Units per mL | One unit |
|---|---|---|
| U-100 (orange cap, common) | 100 | 0.01 mL |
| U-40 (red cap) | 40 | 0.025 mL |
Draw the same 0.10 mL and a U-100 reads 10 units while a U-40 reads 4 units — same liquid, different scale. Always match the number to the barrel you actually hold.
What "mcg per unit" means
It is the micrograms of peptide carried in a single syringe unit for your reconstitution: concentration in mcg/mL divided by the units-per-mL of your syringe. Once you know it, re-dosing is one multiplication instead of four.
mg, mcg and the 1000 rule
1 mg = 1000 mcg. Most peptide doses are quoted in mcg while vials are labelled in mg, so a single ×1000 keeps the two in the same language before any division.
Doses per vial
Total peptide in mcg ÷ dose in mcg. A 10 mg vial at 500 mcg is 10000 ÷ 500 = 20 doses. The calculator rounds down, because a part-dose left in the vial is not a full one.