The following results are obtained from a 38-year-old woman with congestive heart failure:
? Specimen: pleural fluid
? Fluid protein = 4.5 g/dl
? Serum protein = 9.5 g/dl
? Serum LD = 110 U/L
? Fluid LD = 60 U/L
These results are most consistent with which of the following?
a. Chylous effusion
b. Exudate
c. Transudate
d. Normal pleural fluid
Correct Answer: C
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