Store product at 4 degree C if to be used immediately within twoweeks. For long-term storage, aliquot to avoid repeated freezingand thawing and store at -20 degree C. Aliquots are stable at -20 degree C for12 months after receipt. Dilute required amount only prior toimmediate use. Further dilutions can be made in assay buffer.For maximum recovery of product, centrifuge the original vialafter thawing and prior to removing the cap.