United Therapeutics (NASDAQ:UTHR) reported quarterly earnings of $6.39 per share which missed the analyst consensus estimate of $6.43 by 0.62 percent. This is a 18.77 percent increase over earnings of $5.38 per share from the same period last year. The company reported quarterly sales of $748.90 million which beat the analyst consensus estimate of $722.91 million by 3.60 percent. This is a 22.89 percent increase over sales of $609.40 million the same period last year.