The only commercial kit is from Toray-Fuji Bionics, Tokyo, Japan. I will try to
find thier address and pass it on to you. Alternatively, if you want to
configure your own ELISA, Biosource International sell a sheep polyclonal
antiserum and Seikagaka America Inc. sell a monoclonal (which I believe is the
same that is in the Toray kit). Hope this helps.