Table 2

Fluids classified into exudates and transudates using clinical diagnosis and by analysis of fluid and serum total protein, lactate dehydrogenase (LDH), and cholesterol

Clinical diagnosisNFluid total proteinFluid cholesterolFluid LDHFluid: serum total proteinFluid LDH + fluid:serum total proteinLight's criteria
*One case of systemic lupus erythematosus, one case of pelvic abscess, and one case of reactive pleural thickening; †includes two patients with both CCF and chronic renal failure and one with both CCF and hypoalbuminaemia.
CCF, congestive cardiac failure; FN, false negative; FP, false positive; TN, true negative; TP, true positive.
TPFNTPFNTPFNTPFNTPFNTPFN
Exudates total30255264273273300273
Malignancy22193193202202220193
Infection5324141415050
Other*3303030303030
TNFPTNFPTNFPTNFPTNFPTNFP
Transudates total†24186168195195177168
CCF1376761039411285
Cirrhosis6606060606051
Renal failure4222231404031
Hypoalbuminaemia4403122313122