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

Testosterone Calculator

Calculate reconstitution doses for Testosterone

Testosterone profile Accumulation plotter

Vial Size (peptide amount)

BAC Water (added to vial)

Desired Dose

Syringe Size

Concentration 5.00 mg/mL

Doses per vial 0

1mL / 100 units

4000 units

40.000 mL

Exceeds syringe capacity!

Use a larger syringe or reduce dose

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.

Testosterone Reference

Testosterone Dosing Protocols

Goal	Dose	Frequency
TRT - Standard Replacement	100-200 mg/week	1-2x per week
TRT - Conservative Start	80-100 mg/week	2x per week (40-50 mg per injection)
TRT - Propionate Protocol	25-50 mg every other day	Every other day or 3x per week
Performance Enhancement - Moderate	300-500 mg/week	2x per week
Performance Enhancement - Advanced	500-750 mg/week	2-3x per week

Reconstitution Steps

01 Wash hands thoroughly and prepare a clean work surface
02 Wipe vial stopper with alcohol swab and allow to dry
03 Draw air into syringe equal to the volume of testosterone to be withdrawn
04 Insert drawing needle through vial stopper and inject air to equalize pressure
05 Invert vial and withdraw the prescribed dose, tapping to remove air bubbles
06 Switch to injection needle (do not inject with drawing needle)
07 Clean injection site with alcohol swab in circular motion outward
08 For SubQ: pinch skin at 45-degree angle in abdomen, upper thigh, or love handles
09 For IM: insert at 90-degree angle into ventrogluteal, vastus lateralis, or deltoid
10 Aspirate briefly (optional per current guidelines), then inject slowly over 10-20 seconds
11 Withdraw needle, apply gentle pressure with gauze, dispose of needle in sharps container

Quick Reference

Typical Dose 100-200 mg/week (TRT)

Frequency 1-2x per week (injectable)

Half-life ~8 days (cypionate)

Storage Room temperature (68-77F). Protect from light.

Cycle Ongoing (TRT) or 12-16 weeks (cycle)

View full Testosterone 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.