Laboratory Corp (NYSE:LH) reported quarterly earnings of $4.25 per share which beat the analyst consensus estimate of $4.09 by 3.91 percent. This is a 10.68 percent increase over earnings of $3.84 per share from the same period last year. The company reported quarterly sales of $3.538 billion which beat the analyst consensus estimate of $3.505 billion by 0.95 percent. This is a 5.77 percent increase over sales of $3.345 billion the same period last year.