A recombinant human albumin incorporating a synthetic heme was developed about 4 years ago by researchers at a Japanese University. I have been unable to discover if it has been released onto the market or even if it has FDA approval. Here are a couple of links for you.

Oxygen Infusion Project (Albumin-Heme)

Genetic Engineering of the Heme Pocket in Human Serum Albumin: Modulation of O2 Binding of Iron Protoporphyrin IX by Variation of Distal Amino Acids

And here is a contact:

Research Institute for Science and Engineering,
Waseda University
3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
TEL: FAX: +81-3-3205-4740
E-mail: eishun@waseda.jp

I wish you success in finding a treatment that will work for you.