Advisory
Cycles of freezing and thawing should be avoided as such cycles may denature the peptide chains of the antibody and reduce its affinity, specificity and reactivity. For antibodies in a liquid form or reconstituted lyophilized antibodies - small amounts of the soultion could be captured on the cap or the walls of the container. Right before use you could briefly centrifuge the vial to collect all of the solution on the bottom.