Use

The simultaneous analysis of pleural fluid and serum levels of lactic dehydrogenase (LD) and total protein is a reliable method to differentiate between transudative and exudative pleural effusions, guiding further evaluation of effusions that may require investigation of underlying causes. Transudate is defined as LD 113 U/L. Quest Diagnostics Nichols Institute performs this test. This assists clinicians in narrowing diagnostic possibilities and determining the need for additional testing or interventions.