All the following in the Light's criteria are suggestive of exudative pleural effusion EXCEPT
High-Yield Explanation
Light's criteria is used for distinguishing pleural transudate from exudate.Exudate is likely if one or more of the following criteria are met:-(a)Pleural fluid protein:Serum protein ratio>0.5;(b)Pleural fluid LDH:Serum LDH ratio>0.6;(c)Pleural fluid LDH>two-thirds of the upper limit of normal serum LDH. Reference:Davidson's medicine-22nd edition,page no:662.