IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-14-5-63133 Original Research Paper A Novel Diagnostic Approach In Differentiating Pleural Effusions: Evaluating The Role Of Pleural Fluid To Serum Cholinesterase Ratio Aditya R. Tegnoor Dr. May 2025 14 5 01 02