Laboratory Corp (NYSE:LH) reported quarterly earnings of $3.84 per share which missed the analyst consensus estimate of $4.17 by 7.91 percent. This is a 4.35 percent increase over earnings of $3.68 per share from the same period last year. The company reported quarterly sales of $3.35 billion which missed the analyst consensus estimate of $3.48 billion by 3.93 percent. This is a 5.29 percent increase over sales of $3.18 billion the same period last year.