Peptide Storage Cheat Sheet
What labels and sellers say about storing vials before and after mixing, bacteriostatic water, checks when an order arrives and signs a vial may have degraded.
General information only. This is not medical advice and it doesn't replace the storage instructions on the product label or from the seller.
Unmixed Vials
Freeze-dried powder
- Short term
- Fridge, 2–8°C
- Long term
- Freezer, around −20°C, where the label allows
- Light
- Usually kept in the box, away from light
- Moisture
- Usually kept sealed and dry
- Expiry
- The date on the label
- Thawing
- Labels commonly advise against thawing and refreezing
Mixed Vials
After adding water
- Temperature
- Fridge only, 2–8°C
- Freezing
- Sellers commonly say not to freeze
- Use-by
- The period the supplier states
- Light
- Usually kept in the box, away from light
Bacteriostatic Water
Sealed and opened vials
- Sealed
- Store as labelled, until the expiry date
- Opened
- As labelled; multi-dose vials are usually discarded 28 days after opening
- Cloudy or particles
- Labels commonly say not to use it
When an Order Arrives
Checks on delivery
- Packaging
- Check the seal and the label
- Cold storage
- Sellers commonly say to refrigerate promptly
- Damage
- Cracked or leaking vials are commonly reported to the seller
- Records
- The batch number is on the label
Signs a Vial May Have Degraded
What to look for
- Cloudiness
- Haze, floaters or particles
- Colour
- Yellow, brown or any unexpected colour
- Powder
- Shrunken, wet-looking or melted cake
- Seal
- Loose, damaged or missing cap
- Doubt
- Sellers commonly say to discard it
Product Instructions
The label comes first
- Label
- Storage on the label overrides this guide
- Not stated
- The supplier is the source to ask
- Compounds differ
- Stability varies, and each label says what applies
What labels commonly say
Labels and sellers commonly describe unmixed vials as kept cold, dry and dark, and mixed vials as kept in the fridge and not frozen. Where a product label differs from this guide, the label is the source that applies.
Storage notes
Before reconstitution
- Labels and sellers commonly say to keep vials cold, dry and away from light.
- Labels commonly advise against thawing and refreezing.
- Vials with a damaged seal, cracks or unexpected contents are commonly reported to the seller.
After reconstitution
- Sellers commonly say to keep vials in the fridge at 2–8°C and not to freeze them.
- Labels commonly say to keep the vial in its box, away from light.
- Cloudiness, a colour change or particles are commonly given as reasons to discard a vial.