How do I reconstitute peptides with bacteriostatic water?

Draw bacteriostatic water into a syringe, inject slowly down the vial wall (not directly onto powder), then gently swirl until dissolved. Never shake. Store refrigerated at 2-8C and use within 28 days.

How many units should I draw on an insulin syringe?

1 mL equals 100 units on a standard insulin syringe. Divide your required volume in mL by 0.01 to get units. For example, 0.25 mL = 25 units. Use the smallest syringe that fits your dose for better precision.

What syringe size should I use for peptide injections?

0.3 mL (30 unit) syringes offer the best precision for small doses under 0.3 mL. 0.5 mL (50 unit) syringes work for most peptides. 1 mL (100 unit) syringes are needed for larger dose volumes.

Dosing Tools

Peptide Reconstitution Calculator

Calculate peptide doses with our visual syringe guide

P21 Calculator

Calculate reconstitution doses for P21

P21 profile Accumulation plotter

Vial Size (peptide amount)

BAC Water (added to vial)

Desired Dose

Syringe Size

Concentration 5.00 mg/mL

Doses per vial 40

1mL / 100 units

5 units

0.050 mL

How to use: Enter your vial size and the amount of bacteriostatic water you'll add. Then enter your desired dose to see exactly how much to draw.

Tip: 1 mL = 100 units on an insulin syringe. Draw slowly to ensure accuracy.

P21 Reference

P21 Dosing Protocols

Goal	Dose	Frequency
Research protocol	Variable by study	Daily

Reconstitution Steps

01 Clean work area and hands thoroughly
02 Calculate required BAC water volume
03 Draw BAC water into syringe
04 Inject slowly down vial side
05 Gently swirl until dissolved (never shake)
06 Store in refrigerator

Quick Reference

Typical Dose Research compound - dosing not established for humans

Frequency Daily in animal research protocols

Half-life Over 3 hours (mouse plasma)

Storage Refrigerate at 2-8°C

Cycle Not established - experimental peptide without human trials

View full P21 profile

Research Purposes Only

These calculators are provided for educational and research purposes only. Always verify calculations and consult with qualified professionals. The information provided is not medical advice. Peptides should only be used in accordance with applicable laws and regulations.