Academy · Intermediate
Peptide Stability
What degrades a peptide over time — oxidation, hydrolysis, aggregation — and how storage choices push the stability curve.
Degradation modes
Oxidation (methionine, cysteine, tryptophan side chains), hydrolysis (peptide bond cleavage in aqueous solution), aggregation (intermolecular contacts especially in hydrophobic peptides), and adsorption to glass or plastic surfaces.
Drivers of stability
Lower temperature, lower pH variability, absence of light, absence of oxygen, and absence of repeated mechanical stress (shaking, freeze/thaw) all extend usable shelf-life.
Shelf-life rules of thumb
Lyophilised at -20°C: 24+ months. Reconstituted at 2–8°C: 4–8 weeks for most peptides. Refer to the COA's stability section for compound-specific data.
Frequently asked questions
Does refrigerated lyophilised peptide degrade quickly?+
Not significantly for several months for most peptides — but -20°C is safer for long-term storage.
Related reading
Order in 3 steps · tracked delivery
Get HPLC-verified research peptides
Every kit ships with its own third-party certificate of analysis. Dispatch is from Germany, the USA or China depending on destination and stock, with tracking on every order. Supplied for in-vitro research use only.
- 1
Choose your compound
Filter by research goal or search the catalog.
- 2
Checkout in 2 minutes
Bank transfer or card — volume pricing applied automatically.
- 3
Tracked dispatch
Batch COA in the box, tracking number by email.
Most ordered this month
BPC-157
From €269.00
Ipamorelin
From €249.00
Bacteriostatic Water
From €149.00
- HPLC ≥99% purity, batch-matched COA
- Tracked dispatch from Germany, USA or China
- Reship guarantee on non-delivery
Trusted reference supplier · Verified across review platforms
Trustpilot
4.8 / 5 · verified buyers
Google Reviews
Rated by Marbella clients
Scamadviser
Trust score verified
Verified Supplier
Peptides Lookup verified
SSL Secured
256-bit encrypted checkout
HPLC Verified
Batch COA on every vial
3 Shipping Hubs
Germany · USA · China
Discreet Delivery
Temperature-controlled
We accept · Multiple secure payment methods
- Bank Transfer
- Card via Revolut