Federal regulators may have found that the contaminated heparin linked to 19 deaths was caused by a Chinese counterfeit that was much cheaper than the actual heparin to produce. The counterfeit substance, believed to be a chemically altered form of chondroitin sulfate, was introduced into the contaminated heparin batch that led to the heparin recall a few weeks ago. It is not known if the counterfeit substitution was intentional or by accident. If intentional, the motives behind such a counterfeit addition are also not known. This leads me to conclude that exporting drugs, especially from places like China is highly uncertain and potentially dangerous. Regulations and monitoring of manufacturing and quality control practices are at best not known.