HEALTH

Diagnostek Stockholders Sue Over Acquisition Offer: The shareholders filed 11 lawsuits seeking to block Value Health Inc.’s $527-million acquisition of the prescription drug benefits manager. The plaintiffs, who are seeking class-action status, contend that Albuquerque, N.M.-based Diagnostek Inc.’s board breached its fiduciary responsibility by agreeing to sell the company for too low a price. Value Health, based in Avon, Conn., said Monday that it had agreed to buy Diagnostek for stock currently valued at about $527 million. Diagnostek officials could not be reached for comment.