ST. PAUL, Minn.--(BUSINESS WIRE)--April 12, 2006--MEDTOX Scientific, Inc. (Nasdaq:MTOX - News) today announced results for the first quarter ended March 31, 2006: Revenues increased $1.7 million to $16.4 million, or 11.3% Consolidated gross margin increased to 43.7% from 40.6% Gross profit increased $1.2 million to $7.1 million, or 19.9% Operating income increased to $1.6 million from the prior-year $1.0 million, or 53.2% Net income increased to $754,000 from the prior-year $421,000, or 79.1%
