Well, they found something.....

U.S. health officials have identified a contaminant in batches of the blood thinner heparin associated with 19 deaths and are trying to determine how the chemical got into the drug.

The lots of heparin, whose key ingredient was imported from China, were recalled Feb.

28, and Food and Drug Administration officials said Wednesday that no new deaths have been reported since that time.
Dr. Janet Wood****, head of the FDA's Center for Drug Evaluation and Research, said the contaminant is oversulfated condroitin sulfate, a chemical that does not occur naturally.
Condroitin sulfate is a natural compound that occurs widely and is used as a dietary supplement but the oversulfated version has not been widely studied.
"We cannot rule in or out whether this was accidentally or deliberately introduced into the product," Wood**** said, "We are investigating how it got in."

The rest of the story is found here: Contaminant found in heparin identified - Yahoo! News
until the link is no longer good.

'Cat'