Stored lyophilized product at -20C.After reconstitution with distilled water to a concentration not less than 0.1 mg/mL, store at -20C for 12 months or store at 2-8C for 3 weeks.Aliquot to avoid repeated freezing and thawing.Centrifuge vial to ensure maximal product extraction, recommended: 20 sec, 5K RPM.For long term storage we recommend the addition of a carrier protein at 0.1%.