> For the complete documentation index, see [llms.txt](https://docs.rplpeptides.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rplpeptides.com/docs/guides/peptide-storage-guide.md).

# Peptide Storage Guide

## 1. Storage Conditions by Product Form

| Form                         | Temperature |  Humidity  |   Light   |       Duration      |
| ---------------------------- | :---------: | :--------: | :-------: | :-----------------: |
| Lyophilized (unopened)       |    -20°C    | Desiccated | Protected |     24–36 months    |
| Lyophilized (opened)         |    -20°C    |   ≤30% RH  | Protected | Use within 6 months |
| Reconstituted (frozen)       |    -20°C    |      —     | Protected |    Up to 6 months   |
| Reconstituted (refrigerated) |    2–8°C    |      —     | Protected |    Up to 30 days    |

## 2. Storage Equipment Recommendations

| Equipment     | Specification                      | Purpose                      |
| ------------- | ---------------------------------- | ---------------------------- |
| Freezer       | -20°C ± 3°C, no auto-defrost cycle | Prevents temperature cycling |
| Desiccator    | Silica gel or molecular sieve      | Maintains low humidity       |
| Foil wrap     | Aluminum foil                      | Light protection             |
| Cryogenic box | -20°C rated plastic with dividers  | Organized storage            |

## 3. Stability Monitoring Checklist

* [ ] Record storage temperature daily
* [ ] Check desiccant indicator monthly (replace when saturated)
* [ ] Monitor freezer for defrost cycles
* [ ] Document power outages or temperature excursions
* [ ] Verify expiry dates before use
* [ ] Inspect vial integrity before opening

## 4. Temperature Excursion Protocol

| Excursion          | Duration | Action                           |
| ------------------ | :------: | -------------------------------- |
| -20°C to 2–8°C     |  < 24 h  | Return to -20°C; note in records |
| -20°C to 2–8°C     |  > 24 h  | Retest by HPLC before use        |
| -20°C to room temp |   < 1 h  | Return to -20°C; note in records |
| -20°C to room temp |   > 1 h  | Discard or retest before use     |

***

*For storage inquiries: <technical@rplpeptides.com>*


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