Table 2

Discordant results

Laboratory ALaboratory BLaboratory C
Exudate†‡TransudateTransudate
Exudate†TransudateTransudate
Exudate†TransudateExudate‡
Exudate‡Exudate†Transudate
Exudate†‡TransudateTransudate
TransudateExudate*Transudate
Exudate‡TransudateTransudate
Exudate‡TransudateExudate*

  • Discordant results are in bold.

  • Classification of exudate was based on:

  • *Pleural fluid:serum protein is >0.5.

  • †Pleural fluid:serum LDH is >0.6.

  • ‡Pleural fluid LDH is >2/3 the upper reference limit for serum LDH.

  • LDH, lactate dehydrogenase.