PARSIPPANY, NJ--(Marketwire - October 17, 2008) - DSP Clinical Research announced today that Inc. Magazine named the boutique clinical research organization 220th on its 2008 Inc. 500 list. It is the first time that DSP has been named an Inc. 500 company. Inc. Magazine reported DSP's three-year revenue growth at 1,143.7% to $6.9 million.