(Bloomberg Businessweek) -- Many of us are fated to two horrific customer experiences in life: the Department of Motor Vehicles and lab testing. Your doctor orders up lab work, then you go and languish in a waiting room, eventually called to provide samples (some of them embarrassing). Then you return home and wait. For days. Or weeks. Your doctor may call. Or maybe not because you’re fine. If you receive results online, you won’t un...