Common reconstitution mistakes to avoid

Shaking the vial — swirl gently. Shaking can denature peptides. Aiming the water at the powder — angle it against the wall of the vial. Skipping the label — always write the peptide name, date mixed, and expiration on the vial. Guessing the concentration — use a calculator (like this one) every time. Reusing syringes — always use fresh, sterile syringes.