Volume 123, Issue 4, Pages 1181-1187 (April 2003) Variations in Pleural Fluid WBC Count and Differential Counts With Different Sample Containers and Different Methods  Conner Barrett D. , MD, Lee Y. C. Gary , MD, Branca Paul , MD, FCCP, Rogers Jeffrey T. , RRT, Rodriguez R. Michael , MD, Light Richard W. , MD, FCCP  CHEST  Volume 123, Issue 4, Pages 1181-1187 (April 2003) DOI: 10.1378/chest.123.4.1181 Copyright © 2003 The American College of Chest Physicians Terms and Conditions

Figure 1 Total WBC counts from EDTA-treated samples using automated and manual counting methods. CHEST 2003 123, 1181-1187DOI: (10.1378/chest.123.4.1181) Copyright © 2003 The American College of Chest Physicians Terms and Conditions

Figure 2 Automated WBC counts from samples in EDTA-treated tubes vs those from glass tubes. CHEST 2003 123, 1181-1187DOI: (10.1378/chest.123.4.1181) Copyright © 2003 The American College of Chest Physicians Terms and Conditions

Figure 3 Top: pleural fluid neutrophil counts of samples stored in EDTA-treated tubes using manual vs automated counting methods. Middle: pleural fluid monocyte/mesothelial cell counts of samples stored in EDTA-treated tubes using manual vs automated counting methods. Bottom: pleural fluid eosinophil counts of samples stored in EDTA-treated tubes using manual vs automated counting methods. CHEST 2003 123, 1181-1187DOI: (10.1378/chest.123.4.1181) Copyright © 2003 The American College of Chest Physicians Terms and Conditions