Understand the source comparison
Pe-22-28 Storage: Vial Type and Handling Comparison
UV-A/UV-B Filtration 0% blocked 95% blocked 99%+ blocked Amber glass is the minimum acceptable standard for peptide storage. Clear vials are unsuitable for any light-exposed environment Visible Light Degradation (28 days) 15–20% potency loss 8–12% potency loss
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- UV-A/UV-B Filtration
- 0% blocked
- 95% blocked
- 99%+ blocked
- Amber glass is the minimum acceptable standard for peptide storage. Clear vials are unsuitable for any light-exposed environment
- Visible Light Degradation (28 days)
- 15–20% potency loss
- 8–12% potency loss
- 5–8% potency loss
- Secondary light blocking reduces cumulative photon exposure during multi-draw protocols by 40–60%
- Temperature Stability During Brief Room Exposure
- Degradation begins within 30 min
- Vial color does not affect temperature sensitivity. Refrigeration is non-negotiable regardless of container type
- Bacterial Contamination Risk (per draw)
- <0.1% with sterile technique
- Contamination risk is technique-dependent, not material-dependent. Sterile needle use and alcohol wipes are the controlling variables
- Cost (per 10 mL vial)
- $1–2
- $3–5
- $4–6 (including container)
- The $2–4 incremental cost for amber + container storage prevents $150–300 in wasted peptide over a 28-day protocol