Laboratory Corp (NYSE: LH) reported quarterly earnings of $4.99 per share which beat the analyst consensus estimate of $4.78 by 4.39 percent. This is a 14.71 percent increase over earnings of $4.35 per share from the same period last year. The company reported quarterly sales of $3.731 billion which beat the analyst consensus estimate of $3.711 billion by 0.54 percent. This is a 5.69 percent increase over sales of $3.530 billion the same period last year.