The Binding Site Group, Ltd.: Customer complaints identified that samples containing extremely high IgG4 levels exhibit antigen excess and will yield spuriously low IgG4 results.

Agency Publication Date: January 23, 2017

Affected Products

Product: Human Subclass Kit for use on the Beckman IMMAGE"/IMMAGE"800 Analyser Product Code LK009.IM This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents

All lots.

Product: Human lgG4 Subclass kit for use on the Beckman Coulter AU" series This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents Product Code LK009.AU

All lots.

Product: Human lgG4 Subclass Liquid Reagent Kits For use on the Roche Cobas"6000 This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents Product Code LK009.CB

All lots.

Product: Human lgG4 Subclass Liquid Reagent Kits Human lgG1& lgG2 Antisera, lgG3 & 4 Latex reagent and lgG Antisera for use on Hitachi 911/912/917 and Hitachi Modular P Product Code LK009.H/LK001.H This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents

All lots.

Product: Human lgG4 Subclass Liquid Reagent Kits for use on the Siemens BN"II Analyser Product Code: NK009.T This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents

All lots.

Product: Human lgG Subclass Liquid Reagent Kits for use on the Siemens BN"IJ Analyser Product Code: NK001.T This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents

All lots.

Product: MininephThl Human lgG4 Kit Product Code: ZK009.LR This kit is intended for qualifying human IgG subclasses 1,2,3 and 4 immunoglobulins in serum on the Beckman Coulter AU series. Meaurement of these immunoglobulins ais in the diagnosis of abnormal protein metabolism and the body's lack of ability to resist infectious agents

All lots.

Additional Information

Agency: Food and Drug Administration (FDA)

Event ID: 76041

Status: Resolved

Manufacturer: The Binding Site Group, Ltd.

Manufactured In: United Kingdom

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Sources: FDA iRES · Raw API Response

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Affected Products

All lots.