Scientific Protein Laboratories

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Scientific Protein Laboratories is a bio-pharmaceutical company established in Waunakee, Wisconsin in 1976 by Oscar Mayer.[1][2]


In 2004 SPL was acquired by Arsenal Capital Partners for $81 million, today.[3] In 2014 it was acquired by the Chinese company Shenzhen Hepalink Pharmaceutical.[2] The company was a victim, along with other pharmaceutical companies, of the 2008 Chinese heparin adulteration.[1]

The company harvests heparin from pig's intestines in the United States and Canada and Changzhou City, China and supplies the crude heparin to Baxter Travenol and other pharmaceutical companies throughout the world.[1][4]


  1. ^ a b c "Heparin's Deadly Side Effects". Time magazine. 2008. Retrieved 2008-11-16. A month earlier and half a world away, a team of quality-control specialists from Baxter International, the big multinational health-care company (2007 sales: $11.26 billion) based in Deerfield, Ill., arrived in Zhejiang province, China, about two hours by car from Shanghai, to inspect a facility owned by one of its key suppliers. CZ-SPL is a joint venture controlled by Scientific Protein Laboratories LLC (SPL), a Waunakee, Wis., company started in 1976 by Oscar Mayer, of hot-dog fame. (The connection: pigs naturally produce proteins used in pharmaceuticals.) CZ-SPL makes a key ingredient, what in the pharmaceutical business is called an active pharmaceutical ingredient, or API, for a drug called heparin, a blood thinner that is widely used by kidney-dialysis and postsurgical patients to prevent blood clots. The team found little unusual and gave the facility a clean bill of health.
  2. ^ a b Judy Newman. "Waunakee's Scientific Protein Labs to be acquired by Chinese company for $337 million". Wisconsin State Journal, December 27, 2013. "Scientific Protein Laboratories — a Waunakee company spun off from Oscar Mayer Foods nearly 40 years ago"
  3. ^ "Scientific Protein Laboratories Acquired by New York firm". Wisconsin Technology Network. Retrieved 2008-11-16.
  4. ^ Reinberg, Steven (5 March 2008). "FDA Finds Contaminant in Baxter's Recalled Heparin Products". ABC News. Retrieved 30 March 2018. Scientific Protein Laboratories, of Waunakee, Wisc., and its Changzhou SPL plant in Changzhou City, China, is Baxter's main supplier of the active pharmaceutical ingredient in heparin, Woodcock said

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