Peptide Storage: Powder vs Solution Shelf Life

Peptides come in two forms: Lyophilized peptides (powder) Peptides in solution Lyophilized peptides: Room temperature: 3-6 months Refrigerator (+2...+8 °C): 12 months Freezer (-20 °C or -80 °C): 24-36 months Keep the vial tightly closed Don't open without need (moisture is destructive) Peptides in solution are less stable Room temperature: 1 month Refrigerator (+2...+8 °C): 3 months Freezer (-20 °C): 6 months What not to do? ❌ Leave in light ❌ Store in a humid place ❌ Open the vial frequently ❌ Shake and heat