Laboratory Corp (NYSE: LH) reported quarterly earnings of $4.07 per share which beat the analyst consensus estimate of $3.94 by 3.27 percent. This is a 17.97 percent increase over earnings of $3.45 per share from the same period last year. The company reported quarterly sales of $3.515 billion which missed the analyst consensus estimate of $3.558 billion by 1.22 percent. This is a 5.59 percent increase over sales of $3.329 billion the same period last year.