There is a controversy in 'Blood' --a medical journal-- about testing for rhEPO.
The link is here: http://www.ncbi.nlm.nih.gov/entrez/quer ... t=Abstract
Reponses include Don Catlin, and the scientists who originated the test.
You cannot view the reports unless you subscribe to Blood, or use a medical library that does. If you could view the article, you would see photos of the electrophoresis of EPO and rhEPO.
It is dense reading. Incredibly technical. And the photos of what these guys are iintrepreting...it is not like looking at bullet hole in a body. Very subtle.