This item is manufactured by HyTest, Ltd and distributed by Advanced ImmunoChemical, Inc. Antigens / Tumor Markers / CA15-3, standard grade. Source:Human milk.Blood sample from the donor was tested and found negative for HBsAg, HIV-1 and HIV-2 antibodies, HCV, and syphilis.Applications:Calibrator in immunoassays, in vitro studies.Purification:High-speed centrifugation, salt precipitation and delipidization.Presentation:Solution in 1 M NaCl, 1 % Triton X 100, containing 0.09 % of sodium azide as preservative.Storage Conditions:Short-term storage (< 12 months) at +4 °C (between +2 and +8 °C allowed)Long-term storage at -20 °C (between -15 and -30 °C allowed)Material safety note:This product is sold for research use only. Standard Laboratory Practices should be followed when handling this material.Product contains sodium azide as a preservative. Although the amount of sodium azide is very small appropriate care must be taken when handling this product.