ROSEVILLE, Calif.--(BUSINESS WIRE)--Dutton Associates updates its coverage of Nanogen (Nasdaq:NGEN - News) maintaining a Strong Speculative Buy rating and a $1.00 price target. The 12-page report by Dutton senior analyst Wayne T. Lottinville, CFA is available at www.jmdutton.com as well as from First Call, Bloomberg, Zacks, Reuters, Knobias, and other leading financial portals.