Peptides come in the form of lyophilized (freeze dried) powder. The amount of this powder should be indicated on the vial somewhere in milligrams (mg) or micrograms (mcg).
What we need to do with this lyophilized powder is add the proper solvent.
Almost all peptides can safely be constituted with Sterile Water for Injection.
The EXCEPTION to this being IGF variations, which an 0.6% Acetic Acid (100mM) is needed.
- Do not spray solvent directly on peptide. Let it run down the inside of the vial.
- When using 0.6% Acetic Acid (100mM) solutions backfill the syringe with Sterile Water for Injection first then fill the syringe with the solution. If the syringe has more solution in it then what you need DO NOT inject the extra amount back into the vial or else you won’t have a 0.6% Acetic Acid (100mM) solution anymore.