Verified · Apr 2026
Customer service reached out and solved the issue with my last order, very happy with the result. Thank you Oliver for reaching out.
— Simon G.
>=99%
Purity
HPLC + LC-MS
Verified
GMP
Compliant facility
3rd-party
COA every batch
28-Day Serum System is one of the most advanced next-generation peptides available for scientific research today. It's a precision-engineered molecule studied for its use in metabolic and receptor-signalling pathway research. Each vial is synthesised to pharmaceutical-grade standards, delivering exceptional purity and consistency for reliable results in any controlled research setting.
Why researchers choose Pepwise
Every batch of 28-Day Serum Systemis produced in a GMP-compliant facility and validated by independent third-party analysis. Our rigorous quality control ensures ≥99% purity, with every lot verified by HPLC and LC-MS testing. The result is a peptide trusted by laboratories for its stability, solubility, and reproducible performance.
Product highlights
- Purity: >=99% (independently verified)
- Solubility: Fully soluble in water (H2O)
- Manufacturing: GMP and ISO 9001:2008 compliant
- Use: Designed for advanced metabolic and receptor research
- Form: White lyophilised powder for stability and extended shelf life
Handling & storage
Keep sealed and stored dry at 2-8 °C. Follow your internal laboratory handling and stability procedures after preparation.
For in-vitro research and laboratory use only · Not for human or animal consumption · Not a therapeutic good · 18+
Verified reviews · 28-Day Serum System
What researchers say.
5.0 / 5
Verified · Apr 2026
Extremely quick delivery. Quality product. Easily reconstituted. Will be reordering shortly.
— J. R.
Verified · Mar 2026
Absolutely amazing product and even better service
— Bekk L.