What is sensitivity and specificity for exudate of Light's criteria compared to other tests?

Updated: Jul 02, 2019
  • Author: James J Lamberg, DO; Chief Editor: Meda Raghavendra (Raghu), MD  more...
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Answer

Answer

Table 1. Test Sensitivity and Specificity for Exudate (Open Table in a new window)

 

Sensitivity, %

Specificity, %

Light’s criteria

98

83

Protein/serum protein ratio >0.5

85

84

LDH/serum LDH ratio >0.6

90

82

LDH >2/3 upper limits of serum normal

82

89

Pleural-fluid cholesterol level >60 mg/dL

54

92

Pleural-fluid cholesterol level >43 mg/dL

75

80

Pleural-fluid/serum cholesterol ratio >0.3

89

81

Serum/pleural-fluid albumin level ≤1.2 g/dL

87

92