STABILITY
Longevity Stack storage and stability guide
Updated 2026-06-04 · X Factor Peptides
Pre-reconstitution
Lyophilized Longevity Stack at −20°C is stable through the printed expiry date. At 2–8°C the shelf life shortens to ~6 months.
Post-reconstitution
After adding bacteriostatic water, store at 2–8°C and use within 30 days. Aliquot before freezing if you intend to store longer.
Reserve sample policy
We retain a −80°C reserve aliquot of every released lot for 24 months. Email [email protected] if you ever question a result.
SHOP
STACK-LONG is not currently listed. Browse the catalogue for what is in stock, every lot with its own certificate.