Light's criteria

(redirected from Pleural fluid LDH)

Light's criteria

Criteria which help differentiate pleural exudates and transudates
Light's criteria for exudates–any of following
Pleural fluid/serum protein ratio > 0.5
Pleural fluid/serum LDH ratio > 0.6
Pleural fluid LDH >23 the normal upper limit for serum  
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References in periodicals archive ?
Mean pleural fluid protein levels was more than 3 g/dl indicating its exudative nature but some patients had values lower than 3g/dl but other tests such as pleural fluid LDH and high cell count in fluid routine microscopy, indicated its exudative nature.
2 Pleural effusion may be transudative or exudative as classified by pleural fluid protein to serum protein ratio and pleural fluid LDH to serum LDH ratio.
Pleural fluid LDH greater than two thirds of the upper limits of normal serum value
3) Pleural fluid LDH greater than two thirds the upper limits of normal of the serum LDH.
6, or (3) a pleural fluid LDH value greater than 200 IU/L (international units per liter).
There were significant correlations between pleural fluid [beta]-globin DNA concentration and pleural fluid LDH activity [r = 0.
33, a pleural fluid LDH of 99 U/L, and a pleural/serum LDH ratio of 0.
b) Pleural Fluid Biochemistry: Pleural fluid LDH was [greater than or equal to] 1000 IU/L in 44% cases and <1000 IU/L in 56% cases.
Pleural LDH to Serum LDH Ratio: The ratio of pleural fluid LDH to serum LDH was more than 2 in 100%, 3.