FIGURE 2.

Pleural fluid total lactate dehydrogenase (LDH) values in 74 patients with chylothorax. Horizontal hashed line denotes two-thirds of the upper normal limit for serum LDH value (ie, threshold between exudate and transudate by LDH criterion). Boxes show interquartile ranges, and error bars represent highest and lowest values. The mean ± SD total LDH level was 133.6±133.3 U/L (median, 96.5 U/L; interquartile range, 71-144 U/L).

SI conversion factor: To convert LDH values to μkat/L, multiply by 0.0167.