I ordered 2 kits of TB500 and it appears every vial (20) is not vacuum sealed. First order with this vendor and they had labs showing 97% purity and price was lowest I've seen so gave it a try. So would you trust using a peptide from a vial not vacuum sealed? I've used 4 vials so far, no bad effects but not sure if I should keep risking it. Normally every peptide I've received was properly sealed.