Effusion fluids are classified as transudates or exudates. According to Light's criteria, all of the following applies to an exudate EXCEPT? Please select the single best answer
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Pleural fluid/serum protein ratio
>0.5
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Pleural fluid/serum lactate dehydrogenase (LDH) ratio >0.6
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Pleural fluid lactate dehydrogenase (LDH)
<(2)/(3)
the normal upper limit for serum
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Serum-ascites albumin gradient (SAGG) <1.1 gldL