Description General description Native IgA purified from human plasma. Packaging 2 mg in Plastic ampoule Please refer to vial label for lot-specific concentration. Warning Toxicity: Standard Handling (A) Physical form In 100 mM NaCl, 100 mM Tris-HCl, pH 8.0. Preparation Note Prepared from plasma that has been shown by certified tests to be nonreactive for HBsAg and for antibodies to HCV, HBc, HIV-1 and HIV-2. Reconstitution Following initial thaw, aliquot and freeze (-20°C). Other Notes Variables associated with assay conditions will dictate the proper working dilution.