# Peptide Inventory Management: Track Vials, Expiry, and BAC Water Like a Pro

Source: https://www.trackpep.com/blog/peptide-inventory-management

> Educational information only. Not medical advice, and not a dosing recommendation. TrackPep records what you enter and converts a dose you were prescribed into a syringe reading; it never decides a dose for you. Talk to a licensed clinician.

Running out of a vial mid-protocol or using expired BAC water are avoidable mistakes. Learn how to build an inventory system that keeps your protocol running smoothly.

<Disclaimer />

If you have ever had to skip a dose because a vial ran out at the wrong time, or wondered whether that BAC water is still good, this guide is for you. A little inventory hygiene goes a long way.

## Why inventory management matters

Three scenarios that inventory tracking prevents:

1. **Mid-protocol runout** — You open a vial, use half, and forget how much remains
2. **Expired BAC water** — Bacteriostatic water is only good for 28 days after first puncture
3. **Lot recall** — A contaminated batch gets reported and you need to know which vials you used

<Callout>
TrackPep's inventory feature tracks mg per vial, BAC water volume, expiry dates, and remaining doses. It also logs which lot number each dose came from.
</Callout>

## What to track per vial

For each vial in your inventory:

| Field | Why it matters |
|-------|---------------|
| Compound | Which peptide or GLP-1 |
| mg per vial | Starting mass — needed for dose math |
| BAC water added | The volume you reconstituted with |
| Lot number | Enables recall tracing |
| Expiry date | Use-by from manufacturer |
| Opened date | BAC water 28-day clock starts here |
| Cost (optional) | Track spending per protocol cycle |

## The 28-day BAC water rule

Multi-dose vials use bacteriostatic water, which contains 0.9% benzyl alcohol to inhibit bacterial growth. Once punctured:

- **Viable for 28 days** at 2–8°C
- After that, discard — even if the vial still has peptide left
- Mark the puncture date on the vial with a permanent marker

<Callout>
A common error is continuing to use a vial after 28 days because the peptide looks fine. The risk is bacterial contamination, not peptide degradation. When in doubt, throw it out.
</Callout>

## Reorder planning

A good rule of thumb: order your next vial when the current one reaches 25% remaining. This gives you a buffer for shipping delays.

If you track remaining doses in TrackPep, the app can show you at a glance how many doses you have left and whether your next order needs to arrive before they run out.

## Audit your inventory monthly

Once a month, run through:

1. Check all expiry dates — discard anything expired
2. Check opened dates — discard BAC water older than 28 days
3. Update remaining dose estimates
4. Reorder anything running low

This takes 5 minutes and prevents nearly all supply-related protocol interruptions.

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*Informational only. Always consult a licensed healthcare professional.*

By TrackPep Team.