WIXOM, Mich., April 22, 2008 (PRIME NEWSWIRE) -- Rockwell Medical Technologies, Inc. (Nasdaq: RMTI) announced today that it will hold an investor conference call on Wednesday, May 7, 2008 at 11:00AM EST to discuss its first quarter 2008 results and to provide investors with a business update. Robert Chioini, Chairman and CEO, and Thomas Klema, CFO, will be hosting the call to review Rockwell’s results and answer questions from investors.