Which one of the following parameter is consistent with pleural transudate?
Pleural fluid LDH levels greater than 1000 IU/L suggest empyema, malignant effusion, rheumatoid effusion, or pleural paragonimiasis. The diagnosis is suggested by a pleural fluid/serum LDH ratio of greater than 1, with a pleural fluid/serum protein ratio of less than 0.5 Normal levels of LDH in the blood can vary depending on the lab, but usually range between 140 units per liter (U/L) to 280 U/L for adults and tend to be higher for children and teens Ref Davidson edition23rd pg 626
Ldh<2/3 of upper limit of serum ldh
WBC -1500/mm3
Specific gravity-1.120
Protein-2.5gram/dl
Respiratory system