Product is the lyophilized powder of human serum IgA and buffer salts.
- Human IgA is purified from pooled human serum using multi-step procedures which may include salt fractionation, gel filtration, ion-exchange chromatography and immunoabsorption.
- The product is dialyzed into 0.01M sodium phosphate, 0.07M sodium chloride, pH 7.3, filtered through a 0.22 µm filter, vialed and lyophilized.
- No preservative has been added.
- This product is suitable for use as a positive control in antibody identification screening techniques and is recommended as an
- ELISA coating antigen and control.
- Purified human serum IgA is suitable for use as a positive control in antibody identification screening techniques and is recommended as an ELISA coating antigen and control.
- From human plasma highly purified, immunoabsorbed to remove trace amounts of contaminant proteins
The product is tested for purity at a minimum of 20 mg/mL using immunoelectrophoresis. The product is human serum IgA; no trace of IgG, IgM or non-immunoglobulin serum proteins is detected. The total protein is determined using the Biuret procedure, with bovine albumin as the standard. Each vial is overfilled by approximately 10 percent so that a minimum of 5 mg of human serum IgA is obtained upon reconstitution.
Human IgA is purified from pooled human serum using multi-step procedures which may include salt fractionation, gel filtration, ion-exchange chromatography and immunoabsorption. The product is dialyzed into 0.01M sodium phosphate, 0.07M sodium chloride, pH 7.3, filtered through a 0.22 μm filter, vialed and lyophilized.
