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FDA finds unidentified substance in Baxter's blood-thinning drug heparin

www.chicagotribune.com

A significant amount of an un-identified foreign substance contaminated Baxter International Inc.'s blood-thinning drug heparin, the U.S. Food and Drug Administration said Wednesday, raising the possibility of intentional tampering in a supply chain that begins with pig farms in China.

The mysterious substance, which has a chemical makeup similar to heparin, comprises as much as 20 percent of the active ingredient in nine suspect lots produced by Baxter since September, the FDA said Wednesday. The suspect lots are connected to at least four deaths reported nationwide since Baxter noted a spike in adverse reactions to the drug in late December.

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