Prostate Specific Antigen, Human, >= 95% (PSA, Kallikrein-3, Kallikrein III, Seminin, Semenogelase)

May be stored at 4 °C. For long-term storage, aliquot and store at 4 °C. Do not freeze. Aliquots are stable for at least 6 months. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.