DEERFIELD, Ill.--(BUSINESS WIRE)--Dade Behring Inc. (NASDAQ:DADE) and Immunalysis announced today that they have signed an agreement allowing Dade Behring to distribute four prescription medication drug tests manufactured by Immunalysis. The agreement also includes a commitment between Dade Behring and Immunalysis related to working together to meet certain future needs of the dynamic drug-testing market.