▶ Research Tool

Peptide Reconstitution
Calculator

Calculate your exact syringe draw volume instantly. Select a peptide preset or enter your own values — results update as you type.

U-100 Insulin Syringe Standard mcg & mg Dose Support Vial Supply Duration

Reconstitution Calculator

Results update automatically as you type.

Quick Presets

Based on the smallest vial size we stock for each compound.

mg
mL

Enter your values above
— results appear instantly.

Reference Tools

Unit Converters

Mass Conversion

1 mg = 1,000 mcg

mg
⇄
mcg

Volume Conversion

1 mL = 100 units (U-100)

mL
⇄
units

Concentration

mg/mL ↔ mcg/mL

mg/mL
⇄
mcg/mL
Quick Reference

Common Reconstitution Guide

Peptide Vial Size BAC Water Concentration Typical Dose Draw (units)
Retatrutide 10 mg 2 mL 5 mg/mL 2 mg 40 units
Tirzepatide 10 mg 2 mL 5 mg/mL 1 mg 20 units
BPC-157 + TB-500 10 mg 2 mL 5 mg/mL 0.5 mg 10 units
GHK-Cu 50 mg 2 mL 25 mg/mL 3 mg 12 units
Tesamorelin 10 mg 2 mL 5 mg/mL 1 mg 20 units
MT-1 (Melanotan I) 10 mg 2 mL 5 mg/mL 1 mg 20 units
MT-2 (Melanotan II) 10 mg 2 mL 5 mg/mL 1 mg 20 units
CJC-1295 + Ipamorelin 10 mg 2 mL 5 mg/mL 0.25 mg 5 units
GLOW
50mg GHK-Cu + 20mg BPC-157/TB-500
 70 mg 7 mL 10 mg/mL 1 mg 10 units
KLOW
50mg GHK-Cu + 20mg BPC-157/TB-500 + 10mg KPV
 80 mg 8 mL 10 mg/mL 1 mg 10 units
MOTS-C 10 mg 2 mL 5 mg/mL 1 mg 20 units
NAD+ 500 mg 5 mL 100 mg/mL 50 mg 50 units
Glutathione 1500 mg 10 mL 150 mg/mL 50 mg 33.3 units
Semax 10 mg 2 mL 5 mg/mL 0.5 mg 10 units
Selank 10 mg 2 mL 5 mg/mL 0.25 mg 5 units
Laboratory Protocol

How to Reconstitute a Lyophilized Vial

Using a pre-filled pen? Pens are supplied pre-mixed and ready for research use — no reconstitution is required. Simply store as directed below. This protocol applies to lyophilized (freeze-dried powder) vials only.

STEP 01

Prepare & Sanitise

Work on a clean, stable surface. Wipe the rubber stoppers of both the peptide vial and the bacteriostatic water vial with a fresh alcohol swab and allow them to air-dry fully.

STEP 02

Draw the BAC Water

Using a sterile syringe, draw the required volume of bacteriostatic water. Use the calculator above to determine the volume that gives your target concentration.

STEP 03

Add Water Slowly

Insert the needle through the peptide vial's stopper at an angle and let the water run gently down the inside wall of the glass. Never jet the stream directly onto the powder.

STEP 04

Swirl — Never Shake

Gently swirl or roll the vial until the powder fully dissolves. Shaking creates foaming and shear stress that can degrade fragile peptide bonds.

STEP 05

Inspect the Solution

The reconstituted solution should be clear and free of visible particles. If cloudiness or particulates persist after full dissolution, do not use the material.

STEP 06

Label & Refrigerate

Record the reconstitution date and final concentration on the vial label, then store refrigerated at 2–8 °C. See the storage guidelines below.

Handling Reference

Storage Guidelines

Lyophilized Vials · 2–8 °C

Before Reconstitution

  • Store sealed vials refrigerated at 2–8 °C, away from direct light
  • For long-term storage (6+ months), freeze at −20 °C
  • Short periods at cool room temperature (e.g. during transit) do not compromise lyophilized stability
  • Keep vials sealed and dry until reconstitution
Reconstituted · 2–8 °C

After Reconstitution

  • Refrigerate at 2–8 °C immediately after mixing
  • With bacteriostatic water, solutions are typically stable for 4–8 weeks refrigerated
  • Do not freeze reconstituted solutions — freeze–thaw cycles degrade peptides
  • Minimise agitation and light exposure; label with date and concentration
Pre-Mixed Pens · 2–8 °C

Pre-Filled Pens

  • Pens arrive pre-mixed — no reconstitution needed
  • Store refrigerated at 2–8 °C with the cap on
  • Never freeze a pen — freezing permanently damages the solution
  • Keep away from direct sunlight and heat sources

Research Disclaimer

This calculator is provided for educational and reference purposes only. Calculations follow standard U-100 insulin syringe reconstitution methodology: concentration (mcg/mL) = peptide (mg) × 1,000 ÷ BAC water (mL); draw volume (units) = dose (mcg) ÷ concentration (mcg/mL) × 100. All Peptide Pal products are research compounds for in-vitro laboratory use only — not for human or animal consumption. Results do not constitute medical advice.